Emollient
UNDECYLPENTADECANOL
Safety score · 0–100
Good
Derived from EU CosIng regulatory status, PubChem hazard data and published research. How we score.
About
A branched fatty alcohol (Guerbet alcohol) used as a light, smooth-feel emollient. Generally well-tolerated.
Undecylpentadecanol (CAS 68444-33-7) is a Guerbet alcohol — a branched, long-chain fatty alcohol synthesized by self-condensation of shorter-chain alcohols. The branching prevents crystallization at room temperature, so it remains a clear liquid with smooth, dry skin feel and excellent oxidative stability. Used as an emollient in lotions, sunscreens, and color cosmetics. CIR considers Guerbet alcohols safe in cosmetics. No GHS hazards or CMR concerns at typical use levels (1-15%).
Function
Skin benefits
- Lightweight, dry skin feel
- Improves spreadability
- Stable against oxidation
Known concerns
- Limited ingredient-specific data
- Slower biodegradation than straight-chain alcohols
References
EU CosIng database
European Commission cosmetic ingredient registry — regulatory status, restrictions, authorised functions.
Related emollients
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This profile is for educational purposes and does not constitute medical advice. Regulatory status and scientific understanding evolve — always read the physical product label and consult a healthcare professional for personal concerns.