Rosemary is an evergreen shrub native to the Mediterranean coast, an herb characterized by fragrant, needle-shaped leaves and small flowers in shades of pale purple or blue. It belongs to the Lamiaceae family, which is part of the mint family, and its scientific name is Salvia rosmarinus. The name rosemary comes from the Latin word meaning "dew of the sea," and it is characterized by a refreshing scent that seems to be infused with a sea breeze. Ancient Egyptians, Greeks, and Romans regarded rosemary as a sacred plant, using it in rituals and documenting its medicinal properties. In medieval Europe, it was believed that drying rosemary and placing it under a pillow could ward off evil spirits and witches and prevent plagues. There is also an anecdote that ancient Greek students wore rosemary wreaths on their heads during classes, believing it to have "memory-enhancing" properties. For these reasons, rosemary has been regarded as a symbol of remembrance and memory, and has long been used throughout Europe as a wreath for weddings or as a memorial plant for funerals.
"Hungary Water," a plant of great importance in the history of fragrances said to have been created for Queen Elizabeth of Hungary in the 14th century, is known as the first alcohol-based perfume in Europe, and rosemary was its main ingredient. The original recipe for Hungary Water records the process of infusing fresh rosemary and thyme into brandy and distilling it, and subsequently lavender, mint, sage Variations adding herbs and citrus flowers have also emerged. As such, rosemary has been used as a key ingredient since the dawn of modern perfumery, and has been widely utilized in air fresheners and perfumes throughout Europe since the Renaissance.
Rosemary extraction method and production method
Rosemary fragrance is traditionally obtained through distillation. Before the 18th century, it was used in the form of herbal liqueurs made by steeping herbs in alcohol or as timox; however, with the development of distillation equipment in the modern era, essential oils began to be extracted on a large scale. Today, the most common method is steam distillation, in which rosemary leaves and flowers just before blooming are steamed to collect the volatile aromatic compounds through cooling. Rosemary essential oil obtained through this method has a transparent pale yellow color and concentrates a refreshing herbal scent. Although rosemary was used in traditional Eastern distilled spirits and herbal vinegars, steam distillation is primarily utilized in modern times to obtain high-purity oil. Meanwhile, advanced technologies such as supercritical CO₂ extraction have recently been introduced to extract the beneficial components of rosemary more completely. Rosemary extract obtained through CO₂ extraction is rich in antioxidants (such as rosmarinic acid and carnosol) and possesses powerful antioxidant effects, strong enough to be approved as a food preservative. In the field of perfumery, essential oils focused on fragrance components are primarily used rather than these extracts, but fractional distillation products with specific components enhanced or removed are also utilized when necessary. For example, rosemary oil with terpenes removed is processed to reduce the volatile, harsh top scent and leave only a soft fragrance, making it suitable for use in perfumes.
Comparison of rosemary varieties based on production region
Although rosemary is cultivated in temperate climates worldwide, Mediterranean coastal countries are famous for commercial fragrance production. In particular, southern France, Spain, Tunisia, and Morocco are major production areas where intensely fragrant rosemary grows in soil affected by dry sea breezes. Rosemary grown in large quantities in these regions is processed into essential oil through distilleries and supplied to the international fragrance market. Interestingly, the chemical composition (chemotype) of rosemary oil varies depending on the production region and variety. Rosemary essential oil is broadly classified into several chemotypes, the most representative of which are 1,8-cineole (ct. cineole), camphor (ct. camphor), and verbenone (ct. verbenone).
Rosemary scent and key notes
Rosemary is classified as an aromatic scent and is widely used, particularly in refreshing citrus perfumes and fougère men's fragrances. Historically, rosemary was an indispensable ingredient in the typical recipes of Eau de Cologne popular in 18th and 19th-century Europe, and it remains essential today for creating the scent of classic cologne. Rosemary is placed in the top notes to open the first impression with freshness, or adds green richness in the middle notes as part of a herbal bouquet. It pairs particularly well with citrus fruits, such as lemon, Bergamot, When used with top notes such as orange, they double each other's freshness.
In the fougère type lavenderRosemary is added to the combination of oakmoss and coumarin to create an even more natural mossy scent. Additionally, rosemary subtly appears in chypre and oriental fragrances, complicating the nuances of the scent. As such, rosemary plays a supporting role across all perfume genres, serving to breathe natural, green vibrancy into the fragrance.
The concentration of rosemary used in perfumes is generally low. Due to its high volatility and distinct character, it is incorporated in small quantities—less than 1 to 51 TP 3 T—of the overall formula to harmonize with other notes. In particular, in citrus colognes, it is used only enough to support the freshness of lemon and orange, whereas in designs where herbs are prominent, the concentration may be raised to around 51 TP 3 T. Additionally, rosemary is frequently included in men's skincare products and aftershaves because its subtle, cooling herbal scent provides a refreshing sensation after shaving.
In a word, the scent of rosemary essential oil is fresh, herbal, and harmoniously blended with the clear, medicinal aroma characteristic of camphor. When freshly picked rosemary leaves are rubbed together, a refreshing coolness reminiscent of mint and eucalyptus rises first; this sensation is created by its main components, 1,8-cineole and menthols. Simultaneously, a pungent camphor scent emerges with a distinct presence, while a green, woody aroma reminiscent of pine needles or fir sap serves as the background. In fact, fresh rosemary leaves rarely exhibit a nutty, buttery nuance, which is the secret behind its ability to enhance the flavor of dishes. However, because dried rosemary tends to lose some of this rich aroma texture, oil extracted from fresh rosemary possesses the most complex flavor profile.
As a fragrance ingredient, rosemary oil has good diffusion and volatility, so it is positioned between the top and middle notes of a perfume. Typically, it delivers a sharp herbal scent in the initial notes and dissipates quickly, but some lingering notes remain into the middle notes to blend with other scents. Cineole-type rosemary, which has a high 1,8-cineole content, has a light and sharp impression, clearly fulfilling the role of a top note, while softer scents like Verbena have relatively longer lasting power, continuing a subtle grassy aroma in the middle notes. Camphor-type rosemary sometimes adds depth to the middle notes by incorporating slight resinous or earthy notes.
When you first smell rosemary, its scent is distinct enough to make you exclaim, "Ah, rosemary!" However, in perfume blends, it quickly harmonizes with other notes and becomes a supporting actor that blends in. This is because, unlike herbs with a prominent presence such as lavender, rosemary has the property of seamlessly blending into the background. Consequently, rosemary often plays the role of a "hidden gem" in perfumes, serving as a humble note that enhances the overall freshness and vitality of the scent without taking center stage.
To be more specific about the fragrance differences based on chemotype, cineole-type rosemary oil is cool and sharp like menthol, evoking masculine barbashop scents, whereas the verbenone type features a relatively sweet grassy scent that pairs well with sophisticated naturalistic perfumes. While oils with a high camphor content can sometimes resemble the scent of mothballs (naphthalene) if excessively strong, blending them in small amounts imparts a vintage charm to the fragrance. In summary, rosemary can be described as a fragrance that forms a trio of "herb + camphor + woody." Within this framework, the tone and manner of the scent are determined by adjusting the proportions of cineole, camphor, and verbenone to emphasize freshness or bring out warmth.
Fragrances that blend well with rosemary essential oil
As a fragrance, rosemary can be widely blended with various notes, but there are certain combinations that pair particularly well. First, as mentioned earlier, citrus notes are the perfect match for rosemary. Lemon, Bergamot, When the herbal scent of rosemary is added to the refreshing fruity aroma of oranges, it creates a bright and clean fragrance reminiscent of a Mediterranean seaside garden. The combination with lavender is also traditional. Both rosemary and lavender are representative herbs of the Provence region, and when used together, they complete a quintessential aromatic herbal bouquet. To this, thyme, sage, You can achieve a three-dimensional harmony of herbal notes by adding small amounts of other herbs such as basil and marjoram.
It pairs well with woody notes, and since rosemary itself has a slight coniferous feel, it is similar to pine and cypress., Cedarwood It harmonizes with notes such as pine needles. For instance, mixing rosemary with pine needles creates a more atmospheric forest scent, while combining rosemary with cedarwood can enhance a masculine feel with a dry, herbal woody fragrance. Among spices, it surprisingly pairs well with slightly bitter spices like frankincense (olibanum), which shares similarities with rosemary's camphor-like quality, or cloves, as well as notes like pepper or patchouli. This combination adds spiciness and depth to the herbal scent, creating a mature atmosphere.
Conversely, among floral scents, rosemary is primarily paired with powdery florals like lilies, violets, and irises to add a natural earthy scent to bouquets. For instance, it is a technique that incorporates a touch of herb into delicate floral fragrances to evoke the aroma of soil.
To summarize, rosemary is citrus, lavender, While it pairs well with various herbal, woody, and spice notes, it is generally avoided when combined with notes of completely different orientations, such as seaweed or strong musk. Rosemary's distinctive herbal scent enhances the harmony and unity of the overall fragrance when mixed with compatible notes. Therefore, rather than using rosemary to establish the "framework" of a perfume, perfumers add it to an existing structure like a balancer to elevate the completeness of the scent.
Representative commercial perfumes using sandalwood
- Guerlain “Jicky” (1889) – A masterpiece by Guerlain considered the progenitor of modern perfumery, this historic fragrance was originally released for women but has been enjoyed by men as well. The top notes feature the freshness of lavender and bergamot, subtly blended with rosemary to create a unique scent reminiscent of a herbal cookie. Geranium and jasmine emerge in the middle notes, while the base is anchored by the sensual aromas of vanilla and civet. Within this combination, the rosemary does not stand out but sets the whole scent fresh, embodying Jicky’s signature rustic Provençal charm.
- Dior “Eau Sauvage” (1966) – A men’s fragrance synonymous with citrus aromatics. Rosemary supports the zesty top notes of lemon, creating a very refreshing impression, while basil and jasmine blend in the middle to add sophistication. In particular, this fragrance lavender It is famous for minimizing the use of other ingredients and instead highlighting the herbal notes with rosemary; thanks to this, the scent is more transparent and light, while standing out with a masculine cleanness. Oakmoss and vetiver provide classic depth in the base, while rosemary plays a role in maintaining a clear tone from start to finish.
- Acqua di Parma “Colonia” (1916) – A legendary Italian Eau de Cologne beloved by both men and women. The bright scent of Sicilian citrus (lemon, orange, bergamot) harmonizes with rosemary and lavender to deliver a quintessential Mediterranean herbal citrus fragrance. While the middle notes feature the subtle floral notes of rose and jasmine, herbs such as rosemary hold the floral scents together, maintaining a neutral freshness overall. Rosemary is an indispensable element in this fragrance, which is as clean and elegant as soap, creating Colonia’s signature classic soap scent.
Key phytochemical components of rosemary essential oil
Rosemary essential oil is a complex mixture of dozens of natural compounds, among which the key phytochemicals responsible for its fragrance and efficacy are well-known. First, highly volatile monoterpenes such as 1,8-cineole (eucalyptol), alpha-pinene and beta-pinene, camphene, and limonene are present to form a refreshing, pine-scented tone. Camphor, considered the symbol of rosemary's scent, belongs to the monoterpene ketone group and is present in the oil at a concentration of approximately 10–201 TP³T, determining its characteristic cool and pungent aroma. Borneol and bornyl acetate add a slight balsamic and sweet scent, while small amounts of terpinene-4-ol and linalool are also present to balance the fragrance. Additionally, verbénone, a component found in large quantities in certain chemotypes, imparts a slightly sweet nuance to the cool herbal scent. Beta-caryophyllene is contained as a low-volatility sesquiterpene, adding a subtle spiciness. In summary, rosemary oil has a structure primarily composed of cineole, camphor, pinenes, and borneol/verbenones, and the previously explained chemotype differences appear depending on the ratio of these compounds.
Meanwhile, rosemary is also rich in non-volatile components, but since they contribute almost nothing to the fragrance, they are included in essential oils in minute quantities. Representative examples are rosmarinic acid and carnosic acid, which are polyphenolic compounds with powerful antioxidant effects. It also contains diterpenes such as ursolic acid and carnosol, which exhibit pharmacological activity. The CAS registration number for rosemary essential oil is generally CAS No. 8000-25-7It is denoted as such and is internationally recognized as a food flavoring or cosmetic ingredient. (Another number, 84604-14-8, refers to rosemary extract.)
Precautions for using rosemary essential oil and allergens
While natural rosemary oil is relatively safe, there are precautions that must be taken when using it due to the characteristics of certain ingredients. The International Fragrance Association (IFRA) does not have specific regulations prohibiting the use of rosemary oil itself, but it does recommend limits on certain potentially allergenic ingredients contained within it. For example, since rosemary oil contains small amounts of natural limonene and linalool, the potential for allergy must be indicated if these ingredients exceed a certain concentration in finished perfume products. Additionally, oils with high camphor and 1,8-cineole content can cause skin irritation, so their concentrations must be limited in products that come into direct contact with the skin (e.g., lotions, creams).
Generally, rosemary oil is formulated in low proportions in perfumes, so these ingredients do not pose a significant problem; however, individuals with sensitive skin should exercise caution when using products with a strong rosemary scent. In particular, camphor has been reported to pose a risk of neurotoxicity, such as inducing seizures, at high concentrations, so pregnant women and epilepsy patients are sometimes advised to avoid using rosemary oil. However, this risk applies only to very high doses and is rarely relevant at the levels of general perfume use.
Nevertheless, it is safe not to allow infants and young children under the age of three to directly inhale oils with high 1,8-cineole content, such as rosemary or eucalyptus. This measure is based on reports that cineole can temporarily suppress the respiration of infants. Additionally, regarding hypertensive patients, some past literature mentioned that rosemary oil could cause an increase in blood pressure, so caution was advised; however, due to a lack of conclusive clinical evidence to date, it is generally considered to pose no significant problem.
Nevertheless, individuals with extremely sensitive constitutions or allergies to specific herbs are advised to perform preliminary checks, such as a patch test, when using rosemary-scented products. The latest IFRA guidelines provide maximum recommended usage amounts for each product category (perfume, soap, cream, etc.) to ensure the safe use of rosemary oil. For instance, relatively high concentrations (several 1 TP to 3 T) are permitted in cleansing or rinse-off products, while concentrations are set lower for perfumes that remain on the skin. This measure takes into account the skin irritation potential of the camphor and menthol components within the rosemary oil, rather than the oil itself. Fortunately, rosemary oil is known to contain no phototoxic or photosensitive components, so there is no risk associated with exposure to ultraviolet light.
The aromatherapy effects of rosemary
Rosemary has long been regarded as a medicinal herb and holds an important place in modern aromatherapy. Traditionally, the scent of rosemary has been believed to clear the mind, improve memory, and alleviate depression. In fact, rosemary oil is known to aid brain activity to the extent that it is nicknamed the "scent of memory," and there is some scientific research to support this. A 2012 study in the UK detected 1,8-cineole in the blood of adults who smelled rosemary and found a correlation in which higher concentrations were associated with improved speed and accuracy in performing cognitive tasks.
Another study attracted attention by reporting that spreading rosemary oil in a classroom improved students' scores on memory tests. While these results suggest that the stimulating effect of rosemary scent may be due to biochemical processes beyond mere psychological sensations, caution is required in generalizing these findings, as they are small-scale studies with limited sample sizes.
There is also debate regarding the mood-enhancing and sedative effects of rosemary oil. Some aromatherapists have claimed that the scent of rosemary alleviates depression and revitalizes the mind, and mild antidepressant effects have indeed been observed in experiments. However, it has also been pointed out that because rosemary is fundamentally a stimulating scent, excessive consumption can increase anxiety or tension. Therefore, the mental effects of rosemary can vary depending on the dosage and individual condition, and there is a general consensus that while it helps improve concentration, it is not a scent that soothes the mind.
The physical benefits of aromatherapy include pain relief, recovery from muscle fatigue, and prevention of hair loss. There is a traditional practice that massaging with diluted rosemary oil reduces muscle or joint pain, which is explained to some extent by the local analgesic and warming effects of ingredients such as camphor. Additionally, there has long been a folk remedy that applying diluted oil to the scalp promotes blood flow and aids hair growth; however, rosemary oil garnered attention in 2015 following a report from a small-scale clinical trial showing that it demonstrated hair growth effects similar to those of Minoxidil 2% solution.
In addition, various experiments have been conducted, including studies showing that ointments containing rosemary extract aid in anti-inflammation and wound healing, and reports that the scent of rosemary inhibits airborne microorganisms through its antibacterial action. However, despite these positive results, the lack of large-scale clinical trials means it is still too early to definitively confirm the medical efficacy of rosemary aromatherapy. It is a field where further research is underway, combining scientific findings with traditional knowledge.
Various episodes surrounding rosemary
Rosemary is frequently mentioned in literature and art as a symbol of memory and remembrance. The great English writer Shakespeare features rosemary several times in his works; a particularly famous scene is from *Hamlet*, where Ophelia says, "Here is rosemary. It is for remembrance," urging the memory of a loved one. Thanks to this line, rosemary solidified its image as the "flower of remembrance." Rosemary also appears as a plant of mourning in *Romeo and Juliet*, and in *The Winter's Tale*, there is a scene where Perdita says she has "brought rosemary and ru" to pray for the fidelity of the bride and groom at a wedding. These literary works demonstrate that rosemary was accepted as a symbol of love, memory, and fidelity in European society at the time.
An interesting cultural tradition is the wearing of a rosemary sprig on the chest during ANZAC Day (an Australian and New Zealand day of remembrance commemorating the Battle of Gallipoli in World War I). This tradition originated from the fact that the site of the Gallipoli battle was a hill where Turkish rosemary grew naturally, and rosemary was chosen as a symbol to remember the fallen soldiers. Interestingly, rosemary is known to help improve memory, and it is said that there is a custom in Australia of wearing rosemary on Remembrance Day as well.
Finally, as an interesting superstition, there is a British folktale stating that fairies live in gardens filled with the scent of rosemary. It seems that the scent of rosemary gave people a magical and mysterious feeling to that extent. In fact, rosemary sprigs were an essential ingredient for medieval alchemists when making medicinal decoctions, and they were also burned in rooms to purify the air with the smoke. There are records indicating that during the Great Plague of 17th-century London, hospitals burned rosemary and sandalwood to disinfect the air, and it is said that rosemary was also included in a disinfection formula called "Four Thieves' Vinegar.".
