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DIDECENE

CAS 17438-89-0
72

Safety score · 0–100

Fine

Derived from EU CosIng regulatory status, PubChem hazard data and published research. How we score.

About

A branched alkene used as a skin-conditioning emollient and solvent in cosmetics. Gives formulations a smooth, dry-oil finish.

Didecene is a C10 alkene dimer (1-decene dimer) with a branched structure. It is primarily used as a skin-conditioning agent and emollient that provides a distinctive dry-oil feel. In cosmetic formulations it can also function as a fragrance component or antioxidant carrier. Classified with GHS environmental hazard code H412 (harmful to aquatic life with long-lasting effects) and H315 (skin irritation) in some registrations; care needed in leave-on formulas.

Skin benefits

  • Dry-oil emollient feel
  • Improves product texture
  • Fragrance solubility

Known concerns

  • Skin irritant (H315) in some classifications
  • Environmental hazard (H412)
  • Flammable

References

EU

EU CosIng database

European Commission cosmetic ingredient registry — regulatory status, restrictions, authorised functions.

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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.