POPULAR AND WEIRD / pharmaceutical · cosmetic · acidic
Salicylic Acid
Category
POPULAR AND WEIRD
Subcategory
pharmaceutical · cosmetic · acidic
Origin
Volatility
Base Note
Botanical
N/A — synthetic (originally isolated from Salix alba, willow bark)
Appearance
white powder
Odor Strength
Low
Producing Countries
Synthetic — manufactured worldwide
Pyramid
Base
Salicylic acid is a beta hydroxy acid derived from willow bark, used primarily in cosmetics. In perfumery, its esters (methyl salicylate, benzyl salicylate) are far more important.
Salicylic acid possesses a sharp, slightly bitter arom a similar to of fresh-cut herbs and the crispness of green apples. It can carries a sensati on of cleanliness, like freshly laundered fabrics or a dewy garden in the early morning. The scent profile is not overpowering and often blends smooth into compositions.
Scent Evolution
When paired with floral or fruity notes, salicylic acid can accentuate the brightness and clarity of the fragrance. Its subtle yet particular character can carries feelings of coolness and vitality. The dual nature of its arom a, with its herbaceous undertones, allows it to create a balance in fragrances that aim for a modern, fresh appeal.
Evolution over time
Immediately
Immediately
A sharp, crisp freshness with herbal notes
After a few hours
After a few hours
Cooling and slightly bitter undertones emerge
After a few days
After a few days
Subtle clean notes linger
The Full Story
Salicylic acid, a beta hydroxy acid, has a rich history dating back to ancient times when it was derived from willow bark. Traditionally used for its medicinal properties, it was eventually isolated in the 19th century. Today, it is recognized for its dermatological benefits and for its role in perfumery, where it can influence the overall scent profile of a fragrance. It can penetrate the skin and exfoliate makes it popular in cosmetic formulations, particularly for acne treatment and skin renewal.
Origin and Production
In perfumery, salicylic acid is not a primary fragrance note but is an intriguing functional ingredient. Its use can enhance the longevity of certa in fragrances and add a subtle freshness to compositions. As a synthetic compound, it is often integrated into scents that aim to carries a clean and revitalizing experience.
Chemistry and Scent Profile
Salicylic acid is valued in the formulation of niche perfumes where the focus is on uniqueness and character. Its integration into a fragrance can offer depth and complexity, appealing to those who appreciate a multi-faceted scent. Salicylic acid's incorporation within the luxury niche market shows the intersection of skincare and fragrance, emphasizing a complete approach to beauty and self-care.
Chemical Properties
Salicylic Acid (CAS: 69-72-7, Molecular Formula: C7H6O3). Boiling Point: 334.00 to 335.00 °C. @ 760.00 mm Hg. Melting Point: 213.00 to 215.00 °C. @ 760.00 mm Hg. Flash Point: > 212.00 °F. TCC ( > 100.00 °C. ). Vapor Pressure: 1.000000 mmHg @ 114.00 °C.
Salicylic acid was first isolated from willow bark (Salix alba) in 1838 by Raffaele Piria, who named it after the Latin salix. Its ester methyl salicylate — the wintergreen molecule — occurs naturally in birch bark and is one of perfumery's oldest materials.
Extraction & Chemistry
Extraction method: Synthetic production or extraction from plant sources
Molecular Formula
C7H6O3
CAS Number
69-72-7
Botanical Name
N/A — synthetic (originally isolated from Salix alba, willow bark)
IFRA Status
No known restrictions
Synonyms
2-hydroxybenzoic acid, o-hydroxybenzoic acid
Physical Properties
Odor Strength
Low
Lasting Power
> 200 hours
Appearance
white powder
Boiling Point
334.00 to 335.00 °C. @ 760.00 mm Hg
Flash Point
> 212.00 °F. TCC ( > 100.00 °C. )
Melting Point
213.00 to 215.00 °C. @ 760.00 mm Hg
In Perfumery
Salicylic acid (CAS 69-72-7) is nearly odorless in isolati on but functions as a fixative and chemical precurs or in perfumery. Its ester methyl salicylate (CAS 119-36-8) is the actual odorant — delivering the sharp, sweet wintergreen character. Salicylic acid itself is a pH stabilizer and preservative in formulations. In skinc are-fragrance hybrids, it pulls double duty as a BHA exfoliant. Not used as a standalone fragrance note but as a functional ingredient supporting compositi on stability.
