Rose and Memory: Scientific Research on Rosa damascena Essential Oil and Extracts

Rose and Memory: Scientific Research on Rosa damascena Essential Oil and Extracts

Exploring the hippocampus, neurogenesis, synaptic plasticity, acetylcholine, BDNF, and oxidative stress: what animal studies and limited human research reveal about the potential relationship between Rosa damascena and cognitive function.

Introduction: Beyond the Scent of a Rose

In our previous Rose Academy article, we explored the fascinating relationship between rose fragrance, the olfactory system, learning, and memory.

We examined how a familiar scent may serve as a sensory cue and how presenting the same fragrance during learning and certain stages of sleep may support the consolidation of specific memories.

But an important scientific question remains:

Could the relationship between roses and memory extend beyond the sense of smell?

Researchers have begun investigating this possibility from a different perspective.

Rather than studying rose fragrance solely as a sensory experience, scientists have examined whether preparations derived from Rosa damascena may influence biological processes associated with learning, memory, and cognitive function.

These investigations have explored several mechanisms, including:

• Hippocampal neurogenesis

• Synaptic plasticity

• Cholinergic neurotransmission

• Acetylcholinesterase activity

• Muscarinic acetylcholine receptors

• Brain-derived neurotrophic factor (BDNF)

• Oxidative stress

Studies involving Rosa damascena extracts and essential oil have produced encouraging experimental findings in animal models of memory impairment.

A small clinical trial has also investigated a rose-derived preparation in people living with dementia.

However, most of the available evidence remains preclinical, and the human evidence is limited.

This distinction is fundamental.

What Does the Science Currently Support?

Rosa damascena extracts and essential oil have demonstrated potentially beneficial effects on biological processes associated with learning and memory in experimental studies. However, their ability to improve memory in humans has not been conclusively established.

Understanding what the studies actually tested is essential before interpreting their possible significance for human health.

1. Why Is Rosa damascena Being Studied in Memory Research?

Learning and memory are complex biological processes.

They do not depend on a single molecule, brain region, or neurotransmitter.

Instead, they involve interactions among neurons, synaptic connections, signalling molecules, and cellular systems that help the brain acquire, retain, and retrieve information.

Researchers investigating cognitive function often focus on several important biological mechanisms.

The Hippocampus

The hippocampus is a brain structure closely involved in learning and memory.

It plays an important role in forming and organizing certain types of memories, particularly those involving events, experiences, and spatial information.

Changes affecting the hippocampus are also important in research on cognitive impairment and neurodegenerative diseases.

The Cholinergic Nervous System

The cholinergic system uses acetylcholine as a neurotransmitter.

Acetylcholine participates in communication between neurons and is involved in attention, learning, and memory.

Alterations in cholinergic signalling have long been studied in connection with cognitive impairment.

Synaptic Plasticity

Synaptic plasticity refers to the capacity of connections between neurons to change in response to activity and experience.

These changes may involve strengthening or weakening communication between nerve cells.

Synaptic plasticity is considered an essential biological component of learning and memory.

Neurogenesis

Neurogenesis is the process through which new neurons are formed.

Adult neurogenesis has been investigated extensively in experimental animal models, particularly within regions of the hippocampus.

Its extent and functional significance in adult humans remain subjects of scientific investigation.

Brain-Derived Neurotrophic Factor (BDNF)

BDNF is a protein involved in neuronal survival, function, and plasticity.

It has attracted particular research interest because of its relationship with learning, memory, and the ability of neural networks to adapt.

Oxidative Stress

Oxidative stress occurs when the production of reactive molecules exceeds the capacity of cellular defence systems to maintain balance.

Excessive oxidative stress may contribute to neuronal damage and impaired cellular function.

Researchers are interested in whether certain botanical preparations can influence these processes under experimental conditions.

Why Study Several Mechanisms?

Memory impairment can involve multiple biological changes.

Therefore, a substance being investigated for potential cognitive effects may be studied not only through behavioural memory tests but also through biochemical, molecular, and cellular measurements.

This is the scientific context in which Rosa damascena has attracted attention.

2. Rosa damascena Extract, the Hippocampus, and Neurogenesis

A 2014 Study in an Experimental Model of Alzheimer's Disease

In 2014, Esfandiary and colleagues published a study in the Journal of Neuroscience Research investigating the effects of Rosa damascena extract in a rat model involving amyloid-β-induced cognitive impairment.

Amyloid-β is a peptide associated with the biological pathology of Alzheimer's disease.

Researchers sometimes use experimentally introduced amyloid-β to investigate specific aspects of neuronal damage and memory impairment in animals.

However, such models do not reproduce the full complexity of Alzheimer's disease in humans.

What Did the Researchers Examine?

The investigation combined:

• Behavioural assessments of learning and memory

• Cellular and molecular measurements

• Hippocampal neurogenesis

• Changes associated with synaptic formation and plasticity

The researchers reported improvements in memory-related behavioural outcomes in animals receiving the extract.

They also observed changes in cellular processes associated with neurogenesis and synaptic plasticity.

Scientific reference:Esfandiary et al., 2014 – Journal of Neuroscience Research

What Is Hippocampal Neurogenesis?

Neurogenesis refers to the formation of new nerve cells.

In animal studies, specific regions of the hippocampus have been investigated for their capacity to generate new neurons.

Because the hippocampus is involved in learning and memory, researchers are interested in whether changes in neurogenesis are associated with cognitive performance.

However, an increase in markers associated with neurogenesis does not automatically mean that a substance will improve memory in humans.

What Is Synaptic Plasticity?

Neurons communicate through specialized connections called synapses.

The strength and efficiency of these connections can change in response to experience and neural activity.

This capacity is known as synaptic plasticity.

It is particularly important because memory formation involves changes in neural networks over time.

The 2014 investigation is interesting because the researchers examined both memory performance and cellular processes associated with neuronal connections.

What Do These Findings Mean?

The study suggests that the tested Rosa damascena extract may influence biological processes associated with hippocampal function in the experimental model.

However, several limitations must be recognized:

• The research was conducted in rats.

• The animals had experimentally induced cognitive impairment.

• The material studied was a botanical extract, not rose essential oil.

• The results do not demonstrate that the preparation produces equivalent effects in human brains.

Rose Academy Insight

An improvement in memory-related behaviour in an animal study is an important experimental observation, but it is not proof of improved memory in humans.

The value of this research lies in identifying biological mechanisms worthy of further investigation.

3. Rosa damascena Extract in an Amyloid-β Memory Impairment Model

A Related Study Published in 2015

In another investigation published in 2015, Esfandiary and colleagues examined Rosa damascena extract in rats with memory impairment induced by amyloid-β.

The researchers used a methanolic extract and evaluated the animals through established behavioural tests.

The principal assessments included:

Morris Water Maze

A behavioural test commonly used in animal research to investigate spatial learning and memory.

Animals learn to locate a hidden platform using environmental cues.

Researchers can examine variables such as the time required to locate the platform, swimming distance, and performance during memory assessments.

Passive Avoidance Test

An experimental method used to study learning and memory associated with an unpleasant experience.

The test examines whether an animal remembers an experience and subsequently changes its behaviour.

What Were the Findings?

The researchers reported improvements in selected learning and memory measurements among animals receiving the Rosa damascena extract.

The findings suggested that the extract could influence cognitive performance in this experimental model.

Scientific reference:Esfandiary et al., 2015 – Advanced Biomedical Research

Why Is This Study Important?

The research adds further experimental observations regarding Rosa damascena extracts and memory-related behaviour.

However, it is important to recognize that the 2014 and 2015 publications involved substantially overlapping research teams.

They should therefore not automatically be treated as entirely independent confirmations.

Additionally, the animals were not healthy human participants.

Their cognitive impairment was experimentally induced, and the findings cannot be directly translated into recommendations for people living with Alzheimer's disease.

An Important Scientific Distinction

Amyloid-β-induced memory impairment in rats is an experimental model, not the same as clinically diagnosed Alzheimer's disease in humans.

Animal models can help investigate selected disease-related mechanisms, but they cannot reproduce every aspect of a complex human neurodegenerative condition.

4. Does Rosa damascena Essential Oil Influence Memory?

A 2024 Study in Scopolamine-Induced Amnestic Rats

One of the most directly relevant studies involving Rosa damascena essential oil was published in 2024 in the journal Brain and Behavior.

Teralı and colleagues investigated the effects of Rosa damascena essential oil on learning and memory in rats with experimentally induced amnesia.

The researchers used scopolamine, a compound commonly employed in animal research to temporarily disrupt aspects of cholinergic signalling and impair memory performance.

How Was the Essential Oil Administered?

An important distinction concerns the route of administration.

The essential oil was administered orally to rats at 100 µL/kg under controlled experimental conditions.

It was not an inhalation or rose aromatherapy study.

The researchers compared various experimental groups, including animals receiving scopolamine and animals receiving essential oil or the comparison drug galantamine.

Which Memory Tests Were Used?

Two principal behavioural methods were employed.

Morris Water Maze

Used to evaluate spatial learning and memory performance.

Novel Object Recognition Test

Used to investigate whether an animal recognizes a previously encountered object and distinguishes it from a new object.

These methods allow researchers to assess different aspects of memory-related behaviour.

What Did the Researchers Find?

The study reported that Rosa damascena essential oil attenuated some of the learning and memory impairments associated with scopolamine exposure.

The researchers also investigated several biological markers in brain tissues.

They reported:

• Reduced acetylcholinesterase (AChE) activity

• Increased M1 muscarinic acetylcholine receptor expression

• Increased BDNF levels

These findings were observed in the experimental rat model.

Scientific reference:Teralı et al., 2024 – Brain and Behavior

Why Is This Study Particularly Interesting?

Unlike studies examining only behavioural performance, this investigation combined memory-related tests with biochemical and molecular measurements.

The researchers therefore explored possible biological mechanisms associated with the observed behavioural changes.

However, the results must not be interpreted as proof that inhaling rose fragrance improves memory.

The experimental intervention involved oral administration of essential oil to animals.

A Critical Safety Distinction

The administration of essential oil to animals in a controlled research study is not a recommendation for human consumption.

Experimental doses cannot be converted directly into instructions for everyday use.

Rose essential oil used as a cosmetic or aromatic ingredient should not be ingested on the basis of these findings.

The study also does not establish that applying or spraying rose water produces the same effects.

5. Acetylcholine and Acetylcholinesterase: A Possible Mechanism

One of the biological systems investigated in the 2024 study was the cholinergic system.

What Is Acetylcholine?

Acetylcholine is a neurotransmitter involved in communication between neurons.

It participates in several important functions, including:

• Attention

• Learning

• Memory

• Neural signalling

Changes in cholinergic neurotransmission are relevant to research on cognitive impairment.

What Is Acetylcholinesterase?

Acetylcholinesterase, abbreviated AChE, is an enzyme that breaks down acetylcholine.

This process helps regulate the duration of acetylcholine signalling.

In certain clinical contexts, medicines that inhibit acetylcholinesterase are used to influence cholinergic neurotransmission.

However, the effectiveness and safety of such medicines depend on extensive pharmacological and clinical evaluation.

What Did the Rose Essential Oil Study Show?

In the 2024 rat experiment, scopolamine exposure was associated with changes in AChE activity.

The animals receiving Rosa damascena essential oil showed lower AChE activity than the scopolamine-only group in the brain regions evaluated.

This finding suggests that modulation of the cholinergic system may be relevant to the observed behavioural outcomes.

Does This Prove That Rose Oil Improves Human Memory?

No.

The result concerns enzyme activity measured in rat brain tissue following a particular experimental intervention.

It does not establish:

• That the same effect occurs in humans

• That inhalation produces the same response

• That the effect is clinically beneficial in people

• That rose essential oil can replace medication

Rose Academy Insight

A change in a biological marker may help explain an experimental result, but it does not independently establish clinical effectiveness.

6. The M1 Muscarinic Acetylcholine Receptor

Another finding from the 2024 study involved the M1 muscarinic acetylcholine receptor.

What Is the M1 Receptor?

M1 receptors belong to a group of receptors through which acetylcholine can influence cellular activity.

They are present in brain regions involved in cognitive processing.

M1 receptor signalling has been investigated in relation to:

• Learning

• Memory formation

• Synaptic communication

• Neuronal excitability

Because of these functions, M1 receptors are an area of interest in research on cognitive disorders.

What Did the Researchers Observe?

In the 2024 experiment, researchers reported increased M1 receptor expression in selected brain tissues of scopolamine-exposed rats receiving rose essential oil, compared with rats receiving scopolamine alone.

This finding suggests that changes in M1 receptor expression may be associated with the observed behavioural effects.

However, increased receptor expression does not automatically demonstrate increased receptor function.

The biological significance of such changes depends on how they influence actual signalling pathways.

What Is Still Unknown?

It remains uncertain whether rose-derived essential oil preparations influence M1 receptor expression or activity in the same way in humans.

The long-term consequences, dose dependence, and clinical relevance of the experimental findings also require further study.

7. BDNF: A Protein Associated With Learning and Neural Plasticity

One of the particularly interesting findings in the 2024 essential oil study involved BDNF.

BDNF stands for Brain-Derived Neurotrophic Factor.

It is a protein that plays an important role in neuronal development, survival, function, and plasticity.

Why Is BDNF Important?

BDNF is associated with several biological processes relevant to learning and memory.

These include:

• Support of neuronal function

• Synaptic development

• Synaptic plasticity

• Adaptation of neural networks

• Hippocampal function

• Learning and memory-related processes

BDNF signalling has therefore attracted substantial interest in neuroscience research.

What Did the Rosa damascena Study Report?

In the 2024 experiment, researchers found increased BDNF levels in selected brain regions of scopolamine-exposed rats receiving Rosa damascena essential oil, compared with animals receiving scopolamine alone.

This observation suggests that the experimental effects may involve more than changes in acetylcholinesterase activity.

BDNF-related processes may also be relevant.

Does an Increase in BDNF Mean Memory Will Improve?

Not necessarily.

BDNF is involved in complex biological networks.

An increase in its measured level does not automatically establish improved cognitive function.

More importantly, an increase observed in rat brain tissue cannot be assumed to occur in humans.

The Scientific Interpretation

The reported BDNF changes identify a potentially relevant mechanism for further investigation. They do not establish that rose essential oil increases BDNF or enhances memory in the human brain.

8. Citronellol, Geraniol, Nerol, and Molecular Docking

The 2024 study also included a computational investigation of selected aromatic constituents of Rosa damascena essential oil.

The researchers examined:

• Citronellol

• Geraniol

• Nerol

These compounds are among the constituents commonly associated with the characteristic profile of rose essential oil.

What Is Molecular Docking?

Molecular docking is a computational method used to predict how a molecule might interact with a particular biological target.

Researchers use mathematical models to investigate whether a compound could fit within a binding region of a protein or receptor.

Such models can help identify possible interactions worth examining experimentally.

What Did the Rose Oil Study Suggest?

The computational analysis suggested that citronellol, geraniol, and nerol could potentially interact with an allosteric binding region of a modelled human M1 muscarinic acetylcholine receptor.

An allosteric binding region is a site distinct from the primary binding site of a receptor, where binding may influence the receptor's behaviour.

These findings provided a possible molecular explanation to explore in future studies.

What Does Molecular Docking Not Prove?

A favourable computational prediction does not demonstrate that a compound:

• Reaches the human brain at an effective concentration

• Binds to the receptor in living tissue

• Activates or inhibits the receptor in a clinically meaningful way

• Improves learning or memory in people

Computational modelling is best understood as a method for generating mechanistic hypotheses.

Rose Academy Insight

A molecule's theoretical ability to interact with a receptor is not the same as demonstrating a biological or clinical effect.

Predicted interactions require further confirmation through appropriate laboratory and human research.

9. Oxidative Stress and Memory: Research on Rosa damascena Extracts

Another important area of investigation concerns oxidative stress.

Why Is the Brain Sensitive to Oxidative Stress?

The brain has substantial energy requirements and consumes significant amounts of oxygen.

Normal cellular processes generate reactive molecules, while antioxidant defence systems help regulate their effects.

When these systems become imbalanced, oxidative stress may contribute to damage involving:

• Neuronal membranes

• Cellular proteins

• DNA

• Mitochondrial function

• Synaptic communication

These processes have been investigated in connection with cognitive impairment and neurodegenerative disorders.

A 2015 Study of Rosa damascena Hydroalcoholic Extract

In a study published in Nutritional Neuroscience, Mohammadpour and colleagues examined the effects of a Rosa damascena hydroalcoholic extract in rats with scopolamine-induced memory impairment.

A hydroalcoholic extract is prepared using a mixture of water and alcohol as extraction solvents.

This type of preparation can contain chemical constituents that differ substantially from those present in distilled rose essential oil.

What Did the Researchers Investigate?

The study included:

• Behavioural memory assessments using the Morris Water Maze

• Measurements of oxidative stress-related markers in brain tissue

The researchers examined markers including malondialdehyde and thiol-related measurements.

Malondialdehyde (MDA) is often used as an indicator associated with lipid peroxidation, a process in which oxidative reactions affect lipids.

Thiol-related measurements can provide information about aspects of antioxidant defence.

What Were the Findings?

The extract-treated groups demonstrated favourable changes in selected memory-related behavioural measurements compared with the scopolamine-only group.

The researchers also reported:

• Lower malondialdehyde levels

• Higher thiol-related measurements

These findings suggested that changes in oxidative stress-related processes might contribute to the behavioural outcomes observed.

Scientific reference:Mohammadpour et al., 2015 – Nutritional Neuroscience

What Is the Scientific Significance?

The research suggests that oxidative stress-related mechanisms may be relevant to the potential effects of certain Rosa damascena extracts in experimental memory impairment.

However, the study does not demonstrate that rose essential oil, rose fragrance, or rose water has the same effect.

The experimental material was a hydroalcoholic extract, and the investigation was conducted in rats.

10. A 2023 Study of Aqueous Rosa damascena Extract

Further research published in 2023 examined an aqueous Rosa damascena extract in rats exposed to aluminium chloride.

An aqueous extract is prepared using water as the extraction medium.

Although it is water-based, an aqueous botanical extract is not equivalent to rose water obtained through distillation.

How Was the Study Conducted?

Hejaziyan and colleagues investigated an experimental model in which aluminium chloride was used to induce oxidative damage and cognitive impairment.

The researchers studied:

• Spatial learning and memory-related behaviour

• Acetylcholinesterase activity

• Oxidative stress markers

• Antioxidant-related enzyme activity

• Histopathological changes in brain tissue

The study included different experimental groups receiving aluminium chloride, Rosa damascena aqueous extract, or both.

What Did the Researchers Find?

The researchers reported that the aqueous extract was associated with favourable changes in several measurements.

These included:

• Improved performance in selected spatial memory assessments

• Reduced acetylcholinesterase activity compared with the aluminium-exposed group

• Changes in catalase and glutathione-related measurements

• Reduced malondialdehyde levels

These findings suggested possible protective effects against some of the experimental changes associated with aluminium chloride exposure.

Scientific reference:Hejaziyan et al., 2023 – Evidence-Based Complementary and Alternative Medicine

An Important Limitation

This was an experimental animal model involving aluminium chloride exposure.

It should not be considered a complete reproduction of Alzheimer's disease in humans.

The study also does not establish that ordinary consumption of rose products or use of rose water can prevent cognitive decline.

Why Does the Extract Type Matter?

An aqueous extract may contain various water-soluble plant constituents.

Its composition depends on the extraction method, concentration, and plant material.

A distilled rose hydrosol, by contrast, is produced through a different physical process and has a different chemical profile.

Their biological effects cannot be assumed to be equivalent.

11. What Do These Experimental Mechanisms Tell Us?

Taken together, the animal investigations have explored several biological processes associated with learning and memory.

These include:

Hippocampal neurogenesis and synaptic plasticity

Reported in studies involving Rosa damascena extracts.

Cholinergic signalling

Investigated through acetylcholinesterase activity and M1 muscarinic receptor expression.

BDNF-related processes

Examined in the 2024 essential oil study.

Oxidative stress

Investigated through biochemical markers in studies of hydroalcoholic and aqueous extracts.

However, these findings should not be combined into a single proven sequence of events.

It would be misleading to suggest that rose-derived preparations necessarily reduce oxidative stress, which then increases BDNF, produces neurogenesis, and ultimately improves memory.

The individual studies examined different materials, research models, and biological endpoints.

A More Accurate Scientific Framework

The available experimental findings can be organized into several possible research pathways:

The Scientific Interpretation

The studies suggest several potentially relevant biological pathways. They do not establish a single, complete, or clinically proven mechanism through which Rosa damascena improves memory.

12. Has Rosa damascena Been Studied in Humans With Cognitive Impairment?

A Randomized Clinical Trial Published in 2018

Human research is particularly important because results from animal models do not automatically translate into clinical benefits.

In 2018, Esfandiary and colleagues published a randomized, double-blind, placebo-controlled clinical trial in the International Journal of Preventive Medicine.

The study investigated a Rosa damascena extract preparation in individuals living with dementia.

Who Participated?

The trial involved 40 participants older than 55 years with dementia.

The intervention lasted three months.

Importantly, all participants received donepezil, a medication used in the management of certain forms of dementia.

The study compared:

• Intervention group: Donepezil plus Rosa damascena extract capsules

• Control group: Donepezil plus placebo capsules

Therefore, the investigation examined the potential effects of adding the rose preparation to an existing treatment.

It did not evaluate rose extract as a replacement for medication.

Which Outcomes Were Measured?

The researchers assessed several aspects of cognitive and everyday functioning.

These included:

Mini-Mental State Examination (MMSE)

A screening and assessment tool used to evaluate aspects of cognitive function.

Addenbrooke's Cognitive Examination–Revised (ACE-R)

A cognitive assessment that examines several domains, including memory, attention, language, and other cognitive functions.

Geriatric Depression Scale

Used to evaluate depressive symptoms in older adults.

Memory and Behavioural Problems Checklist

Used to assess selected memory-related and behavioural difficulties.

The investigators also considered daily functioning.

What Were the Results?

At the end of the study, the researchers reported statistically significant differences favouring the group receiving Rosa damascena capsules alongside donepezil in several measurements.

These included:

• MMSE scores

• ACE-R scores

• Depressive symptom measurements

• Behavioural problems

• Daily activity-related assessments

Scientific reference:Esfandiary et al., 2018 – International Journal of Preventive Medicine

Why Is This Study Important?

It is notable because it examined a Rosa damascena preparation in people with diagnosed cognitive impairment rather than relying solely on animal models.

The randomized, placebo-controlled design is also an important methodological feature.

However, the results must be interpreted with care.

What Are the Main Limitations?

Small sample size

Only 40 participants were included in the reported trial.

Small studies are more susceptible to random variation and may provide less precise estimates of treatment effects.

Short intervention period

The intervention lasted three months.

This is not sufficient to establish long-term effects on cognitive decline or disease progression.

Add-on treatment

The rose preparation was administered alongside donepezil.

The findings therefore do not demonstrate that Rosa damascena is effective as a stand-alone intervention.

Specific preparation

The study involved specially prepared capsules containing Rosa damascena extract.

It did not investigate essential oil inhalation, rose water, or cosmetic rose distillate.

Need for independent replication

Larger trials involving independent research groups are needed to determine whether similar findings can be reproduced.

What Can We Conclude?

The study provides preliminary human evidence supporting further investigation of a specific Rosa damascena preparation as an adjunct to established treatment in people with dementia.

However, it does not demonstrate that rose oil improves memory in healthy adults.

Nor does it establish that Rosa damascena can prevent, reverse, or independently treat dementia.

Rose Academy Insight

Human research is essential, but not all clinical studies provide the same degree of certainty.

A small positive trial is a reason for further investigation—not a substitute for larger, independently replicated studies.

13. Are Rose Essential Oil, Rose Extract, and Rose Water Interchangeable?

No.

This is one of the most important distinctions in interpreting the research.

Different rose-derived products may originate from the same botanical species while having different chemical compositions and patterns of exposure.

Rosa damascena Essential Oil

Rose essential oil contains a concentrated mixture of volatile aromatic compounds obtained through distillation.

Its composition is influenced by the botanical material and production conditions.

The 2024 memory study investigated essential oil administered orally to rats.

Those findings do not automatically apply to inhalation or cosmetic use.

Rosa damascena Hydroalcoholic Extract

A hydroalcoholic extract is prepared using a mixture of water and alcohol.

Depending on the extraction conditions, this preparation may contain phenolic compounds, flavonoids, and other plant-derived constituents that differ from the composition of essential oil.

Rosa damascena Aqueous Extract

An aqueous extract is obtained using water as the extraction medium.

It is not necessarily chemically equivalent to a distilled rose hydrosol.

Rosa damascena Extract Capsules

Capsule preparations are formulated for a particular experimental or clinical purpose.

The amount, composition, and characteristics of the enclosed extract influence the exposure.

Results obtained with a research capsule cannot automatically be applied to other rose-derived products.

Rose Water and Rose Distillate

Rose water or rose distillate is obtained from the aqueous phase of distillation.

It contains compounds that are dissolved or dispersed in that phase.

Its chemical profile differs from both concentrated essential oil and many solvent-derived botanical extracts.

Why Does Product Identity Matter?

The following characteristics can differ substantially:

• Chemical composition

• Relative abundance of constituents

• Concentration

• Route of administration

• Absorption and metabolism

• Distribution within the body

• Biological activity

• Safety profile

For this reason, referring only to "rose" is not sufficiently precise when discussing scientific research.

Research Material Comparison

An Important Point for Rose Academy Readers

Evidence obtained with a Rosa damascena extract or essential oil cannot automatically be applied to rose water, rose hydrosol, or a finished skincare product.

This applies equally to conventional rose waters and products manufactured using specialized distillation methods.

Product-specific evidence remains necessary.

14. How Strong Is the Evidence?

The available studies provide different levels of scientific information.

What Does This Comparison Reveal?

Several studies report favourable findings in experimental models.

This makes the topic scientifically interesting.

However, the studies are not directly interchangeable.

They use different:

• Rose preparations

• Animal models or participant groups

• Routes of administration

• Doses

• Study durations

• Outcome measurements

Furthermore, multiple publications from related research groups do not necessarily represent independent replication.

What About Systematic Reviews?

A systematic review published in 2022 examined preclinical and clinical studies investigating Rosa damascena in relation to mental and neurological outcomes.

The review discussed several possible biological mechanisms and highlighted the need for further research.

However, evidence concerning anxiety, sleep, mood, and other outcomes should not be interpreted as direct proof of memory enhancement.

Scientific reference:Mohamadi et al., 2022 – Phytotherapy Research

The Overall Evidence Assessment

The preclinical findings are promising, but clinical evidence for memory improvement remains limited and insufficient for broad claims of effectiveness.

15. Does Rose Essential Oil Improve Memory?

At present, the available scientific evidence does not justify a definitive "yes."

However, experimental research supports several narrower observations.

In selected animal models:

• Rosa damascena extracts have been associated with improvements in learning and memory-related behaviour.

• Extract studies have reported changes associated with hippocampal neurogenesis and synaptic plasticity.

• Rose essential oil has been associated with improved performance in rats with scopolamine-induced memory impairment.

• Lower acetylcholinesterase activity has been reported following certain rose-derived interventions.

• Increased M1 receptor expression has been reported in the 2024 essential oil study.

• Increased BDNF measurements have been reported in selected rat brain tissues.

• Favourable oxidative stress-related changes have been observed in studies using aqueous and hydroalcoholic extracts.

A small human clinical trial also reported positive findings involving Rosa damascena extract capsules used alongside donepezil.

These observations are important, but they do not establish that rose essential oil or rose extract improves memory in the general population.

A Scientifically Appropriate Statement

Experimental research suggests that Rosa damascena essential oil and selected extracts may influence biological processes associated with learning and memory, including cholinergic signalling, BDNF-related pathways, synaptic plasticity, neurogenesis, and oxidative stress. Larger, independent, controlled human studies are needed to determine whether these findings translate into clinically meaningful cognitive benefits.

16. What Should Future Research Investigate?

Although the experimental literature is encouraging, many questions remain unanswered.

Future investigations should examine:

Effects in healthy adults

Do well-characterized Rosa damascena preparations influence learning or memory in people without cognitive impairment?

Effects in older adults

Can selected preparations influence measurable cognitive outcomes in older populations?

Product and formulation differences

Do essential oil and botanical extracts produce different biological responses?

Dose and exposure

How do the amount, duration, and route of administration influence experimental outcomes?

Cholinergic mechanisms

Can effects on AChE and M1 receptors be demonstrated in humans under appropriate research conditions?

BDNF-related changes

Do rose-derived preparations influence BDNF-related measurements in humans, and are those changes associated with meaningful cognitive outcomes?

Active constituents

Which constituents or combinations of constituents contribute to the observed experimental responses?

Long-term outcomes

Are any beneficial findings reproducible over longer periods?

Safety

What are the safety profiles of particular standardized preparations under the conditions required for clinical evaluation?

Cognitive impairment and dementia

Could carefully characterized botanical preparations have a role as adjuncts in future clinical research?

These questions require adequately powered studies, appropriate controls, standardized materials, and independent replication.

They cannot be answered by extrapolating directly from animal doses or isolated biochemical findings.

17. Common Misconceptions

"Rose oil has been proven to improve human memory."

Incorrect.

Certain animal studies have reported improvements in memory-related behaviour.

Human evidence remains limited and does not establish a general memory-enhancing effect.

"Rose fragrance and rose essential oil have the same effects on memory."

Incorrect.

Studies involving odour cues during learning and sleep investigate sensory memory processes.

Studies involving administered essential oil investigate different forms of biological exposure.

Their results should not be combined as though they were the same intervention.

"An increase in BDNF proves that memory will improve."

Incorrect.

BDNF is involved in important neural processes, but changes in its measured level do not independently establish clinical cognitive improvement.

"Reduced AChE activity means rose oil works like an Alzheimer's medication."

Incorrect.

A biochemical result in an animal experiment does not establish equivalent pharmacological effectiveness or safety in humans.

"Research in Alzheimer's animal models proves that Rosa damascena treats Alzheimer's disease."

Incorrect.

Animal models reproduce selected biological characteristics of a disease.

They do not establish that an intervention prevents, treats, or reverses the human condition.

"If rose extract capsules produced positive results, drinking rose essential oil should provide similar benefits."

Incorrect and potentially unsafe.

Research capsules, aqueous extracts, hydroalcoholic extracts, and essential oils have different compositions and exposure characteristics.

Experimental findings are not instructions for ingesting concentrated essential oils.

18. Key Takeaways

Scientific research on Rosa damascena and memory is an emerging field with several interesting findings.

The main conclusions are:

• Learning and memory involve complex processes, including hippocampal function, synaptic plasticity, neurotransmission, and cellular regulation.

• Studies involving Rosa damascena extracts have reported favourable memory-related outcomes in selected animal models.

• A 2014 investigation reported changes associated with neurogenesis and synaptic plasticity in rats.

• A related 2015 study reported improvements in selected behavioural memory tests.

• A 2024 study investigated orally administered Rosa damascena essential oil in rats with scopolamine-induced amnesia.

• The 2024 study reported changes involving AChE activity, M1 receptor expression, and BDNF levels.

• Computational modelling suggested possible interactions between selected essential oil constituents and the M1 receptor, but did not establish clinical activity.

• Research involving hydroalcoholic and aqueous extracts has reported favourable changes in oxidative stress-related measurements.

• A small 2018 clinical trial reported positive results with Rosa damascena extract capsules added to donepezil in people with dementia.

• The available findings do not prove that rose essential oil, rose water, or rose extracts improve memory in healthy humans.

• Larger, independently replicated clinical trials are needed before meaningful therapeutic conclusions can be drawn.

Conclusion: What Does the Science Really Tell Us About Roses and Memory?

The scientific relationship between Rosa damascena and memory extends beyond the familiar experience of a scent evoking a personal recollection.

Research has begun exploring whether rose-derived preparations can influence biological processes associated with cognition.

Animal studies have investigated memory performance, hippocampal neurogenesis, synaptic plasticity, acetylcholinesterase activity, M1 muscarinic receptors, BDNF, and oxidative stress.

Several investigations have reported encouraging results.

A small human clinical trial has also provided preliminary findings involving a Rosa damascena preparation administered alongside established medication.

However, the evidence must be interpreted within the boundaries of the products, experimental models, and outcomes studied.

Essential oil is not the same as a botanical extract.

Oral administration is not the same as inhalation.

An experimental model of memory impairment is not the same as Alzheimer's disease in humans.

And a favourable biochemical measurement does not automatically demonstrate an improvement in cognitive function.

The Scientific Conclusion

Rosa damascena essential oil and selected botanical extracts have demonstrated promising effects on biological mechanisms associated with learning and memory in experimental research. However, much of the evidence comes from animal studies, and human clinical findings remain limited. Larger, well-designed, independently replicated trials are necessary to establish whether these preparations produce meaningful and safe cognitive benefits in people.

These findings open an interesting field of research.

They do not yet justify describing rose essential oil as a proven memory enhancer or treatment for cognitive disorders.

The Akita Rose Academy Perspective

At Akita Rose Academy, we believe that understanding Rosa damascena requires a clear distinction between traditional knowledge, scientific hypotheses, experimental results, and demonstrated clinical outcomes.

The relationship between roses and memory can be investigated from at least two different scientific perspectives.

The first concerns olfactory perception.

A recognizable rose fragrance may serve as a sensory cue associated with learning and memory under specific experimental conditions.

The second concerns the biological activity of rose-derived preparations.

Essential oils and botanical extracts may contain constituents that researchers can investigate for their potential interactions with neurological and biochemical processes.

These approaches are scientifically related, but they are not interchangeable.

A study involving a rose fragrance during sleep does not establish the biochemical effects of rose essential oil.

Similarly, a study involving orally administered rose extract does not establish the cognitive benefits of rose hydrosol applied to the skin.

This distinction is particularly important when discussing products obtained through different extraction and distillation methods.

Akita's Non-De-Oiled Rose Distillate is a distinct botanical preparation. The memory studies discussed in this article do not constitute product-specific evidence of cognitive benefits for Akita Rose Distillate.

The appropriate scientific approach is to recognize the potential of Rosa damascena while ensuring that conclusions remain specific to the materials and methods investigated.

By connecting botanical knowledge, chemical research, neuroscience, and careful evaluation of the evidence, Rose Academy aims to deepen understanding without extending claims beyond what the research supports.

Scientific credibility begins with understanding not only what a study found, but also what it did not demonstrate.

Scientific References

1. Esfandiary, E., et al. (2014). Novel effects of Rosa damascena extract on memory and neurogenesis in a rat model of Alzheimer's disease. Journal of Neuroscience Research, 92(4), 517–530.
   https://doi.org/10.1002/jnr.23319
   PMID: 24395280

2. Esfandiary, E., et al. (2015). Neuroprotective effects of Rosa damascena extract on learning and memory in a rat model of amyloid-β-induced Alzheimer's disease. Advanced Biomedical Research, 4, 131.
   https://doi.org/10.4103/2277-9175.161512
   PMID: 26322279

3. Mohammadpour, T., et al. (2015). Protection against brain tissues oxidative damage as a possible mechanism for the beneficial effects of Rosa damascena hydroalcoholic extract on scopolamine induced memory impairment in rats. Nutritional Neuroscience, 18(7), 329–336.
   https://doi.org/10.1179/1476830514Y.0000000137
   PMID: 24974980

4. Esfandiary, E., et al. (2018). Novel effects of Rosa damascena extract on patients with neurocognitive disorder and depression: A clinical trial study. International Journal of Preventive Medicine, 9, 57.
   https://doi.org/10.4103/ijpvm.IJPVM_199_17
   PMID: 30050668

5. Mohamadi, N., et al. (2022). Evidence for Rosa damascena efficacy in mental disorders in preclinical animal studies and clinical trials: A systematic review. Phytotherapy Research, 36(8), 3016–3031.
   https://doi.org/10.1002/ptr.7496
   PMID: 35653142

6. Hejaziyan, L. B., et al. (2023). Effect of Rosa damascena extract on rat model Alzheimer's disease: A histopathological, behavioral, enzyme activities, and oxidative stress study. Evidence-Based Complementary and Alternative Medicine, 2023, 4926151.
   https://doi.org/10.1155/2023/4926151
   PMID: 37078068

7. Teralı, K., et al. (2024). A comprehensive assessment of the cholinergic-supporting and cognitive-enhancing effects of Rosa damascena Mill. (Damask rose) essential oil on scopolamine-induced amnestic rats. Brain and Behavior, 14(5), e3507.
   https://doi.org/10.1002/brb3.3507
   PMID: 38688895

Related Research: Rose Fragrance as a Memory Cue

8. Rasch, B., Büchel, C., Gais, S., & Born, J. (2007). Odor cues during slow-wave sleep prompt declarative memory consolidation. Science, 315(5817), 1426–1429.
   https://doi.org/10.1126/science.1138581
   PMID: 17347444

Akita Rose Academy — Exploring Rosa damascena through botanical science, neuroscience, clinical research, and responsible interpretation of scientific evidence.

Educational notice: This article reviews published scientific research. It does not provide medical advice, establish therapeutic claims for rose-derived products, or recommend the ingestion of essential oils.