Undecane
Hydrocarbon with 11 carbons, a volatile emollient. Paired with Tridecane it forms the Cetiol Ultimate emollient system (BASF). Provides a light skin feel and good compatibility with UV filters. Used in sunscreen sprays and lightweight textures.
Evidence by route
Topical application
BLimited evidence. One RCT or several controlled studies with limitations.
Functional volatile emollient. Safe at typical concentrations. No standalone active skin effect.
- Cosmetic Ingredient Review (CIR). Safety assessment of alkanes. 2020.
Tolerability and safety
Irritation potential
LowAllergen risk
LowPregnancy
SafeSkin types
Suitable for
NormalCombinationOily
Use with caution
Sensitive
Frequently asked questions
Is Undecane safe during pregnancy?
Undecane is considered safe during pregnancy at typical cosmetic concentrations. Systemic absorption through the skin is minimal.
What skin types is Undecane for?
Undecane suits: normal, combination, oily. Use with caution in: sensitive.