Isostearyl hydroxystearate is a cosmetic-grade ester made from isostearyl alcohol and hydroxystearic acid. It works as a lightweight emollient and binder that improves spreadability and pigment wetting, leaving a smooth, non-greasy finish.
An ester that softens rough patches for a silky, supple feel.
Category
Skin Conditioning, Barrier Support, Hydration
Type
Emollient
Ratings
Overall Rating
Good
Comedogenic Risk
None
Not typically evaluated for comedogenicity — no standardized rating available.
Our take
Is Isostearyl Hydroxystearate a Good Ingredient?
Rated Good as a stable, lightweight ester that reliably boosts slip and pigment wetting, with low irritation in most users. It's a solid formulation aid, though not distinctive enough for a higher rating.
What it does
Skin Benefits
Softens rough patches and helps skin feel supple throughout the day. Contributes to a silky afterfeel that minimizes drag during application.
Where you'll find it
Uses in Skincare & Cosmetics
Common in balms, foundations, and eye products to boost comfort and reduce tugging. Also used in moisturizers to enrich texture and improve the sensory payoff.
Before you use it
Safety
Generally well tolerated with a low likelihood of irritation or sensitization; patch test if skin is reactive. No specific regulatory restrictions known. As with many emollient esters, a small subset of very oily or acne-prone users may notice breakouts.