Emollient
HEPTYLUNDECANOL
Safety score · 0–100
Good
Derived from EU CosIng regulatory status, PubChem hazard data and published research. How we score.
About
A branched long-chain fatty alcohol used as a light, silky emollient and solvent. Well-tolerated skin-wise, with moderate but coherent safety data.
2-Heptylundecanol (CAS 5333-44-8) is a C18 Guerbet-type branched primary alcohol used as an emollient and pigment-dispersing agent. The branching gives it low viscosity, excellent skin spread, and good oxidative stability versus straight-chain counterparts. EU CosIng lists it as skin conditioning/emollient. Not classified as CMR, genotoxic, or endocrine-disrupting. Lacks a dedicated CIR monograph but fits the safety profile of closely related branched fatty alcohols (octyldodecanol, hexyldecanol) that CIR has assessed as safe. Score is at the Good tier entry point, reflecting solid structural analogy to reviewed ingredients but fewer chain-specific studies.
Skin benefits
- Silky, lightweight skin feel
- Spreads pigments and sunscreen actives evenly
- Good oxidative stability
- Low irritation potential
Known concerns
- Less CIR-specific data than shorter-chain Guerbet alcohols
- Petro-sourced in most cases
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.