Common Name(s): Fragrance ingredient,eu allergen or aromatic component,olfactory/flavour
CAS Number: N/a
DESCRIPTION
What It Does: Provides specific aromatic character and olfactory experience contributing to product sensory experience and consumer appeal.
Why It's Used: Fragrance components are the primary cause of cosmetic contact sensitisation โ eu requires individual label declaration of 26 identified fragrance allergens above threshold concentrations.
How It Works: Terpenoid and phenylpropanoid aromatic chemicals interact with olfactory receptor neurons (orns) in the nasal epithelium โ small volatile molecules (logp 2โ5, mw 100โ300) bind g-protein coupled olfactory receptors triggering neurological scent perception. sensitisation risk from electrophilic reactivity of certain functional groups (aldehydes, ฮฑ,ฮฒ-unsaturated carbonyls) with skin proteins.
Typically Found In: All fragrance products
TECHNICAL DETAILS
Primary Category: Active ingredient โ cosmetic active
Secondary Functions: Skin conditioning
Application Areas:
Facial Skincare
Body Care
Hair Care
Beard Care
Color Cosmetics (Makeup)
Dietary/Oral Supplements
Typical Concentration Range: Declare on label above threshold (eu)
SOURCING & ETHICS
Vegan Status: Yes - standard ethanol routes are non-animal; confirm denaturant origin
Halal Status: Conditional - ethanol production route and residual concentration; jurisdiction-dependent, refer to certifier stance
Source Notes: Commercially produced for cosmetic use. verify vegan/halal status with supplier. [audit 2026-07-29 rev2: ethanol pathway; determination depends on route, on whether the plant also produces beverage alcohol, and on residual concentration. determination requires shariah-panel sign-off.]
SKIN COMPATIBILITY
Irritancy Rating: 1/5 โ very low
Comedogenicity Rating: 0/5 โ non-comedogenic
Sensitivity Concerns: Well-tolerated by most skin types.
Safe for Sensitive Skin: Yes
SAFETY & COMPATIBILITY
Safety Profile: Good safety profile at recommended concentrations. ewg score: 1โ2.
Works Well With: Standard skincare actives
Avoid Combining With: No known significant incompatibilities
SCIENTIFIC NOTE
Eu 1223/2009 annex iii allergen threshold: >0.001% in rinse-off, >0.0001% in leave-on โ any listed allergen exceeding these levels requires individual inci label declaration separate from the generic fragrance/parfum declaration.
Last Verified: 2026-03-12
Primary Sources: Eu regulation 1223/2009 annex iii,fragrance allergen declaration requirements