Undecane is a lightweight, volatile C11 hydrocarbon that works as a cosmetic emollient and texturizer. It gives silky slip, quick absorption, and improved spreadability in low-grease skin and hair formulas.
A lightweight liquid that helps formulas spread smoothly and absorb fast.
Category
Skin Conditioning
Type
Emollient
Ingredient Ratings
Overall Rating
Good
Comedogenic Risk
None
Skin Benefits
Delivers a soft, dry-touch finish and reduces greasy afterfeel for a more elegant skin sensation, and improves glide so products spread evenly without heaviness.
Uses In Skincare & Cosmetics
Used in sunscreens, fluid moisturizers, and foundations to improve slip and reduce tack; also found in hair serums for featherlight shine.
Comedogenic Rating
This ingredient is not typically evaluated for comedogenicity, and no standardized rating is available.
Safety
Considered low irritation and suitable for most skin types. As a volatile emollient, it may cause mild transient dryness in very dry or compromised skin if overused. No specific cosmetic regulatory restrictions are commonly noted.
Is Undecane a Good Ingredient?
It rates Good as a lightweight, fast-spreading alkane that reliably improves slip and reduces greasiness with a low likelihood of irritation. It behaves inertly in formulas and is unlikely to clog pores, though it offers no active benefit beyond texture.