Cellulose Acetate Butyrate

Cellulose Acetate Butyrate is a modified cellulose polymer in which hydroxyl groups are esterified with acetic and butyric acids. It's used in beauty products as a film-former that adds flexibility, gloss, and wear in coatings like polishes and makeup.
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Ingredient Snapshot

Overview
A flexible film-former that keeps polish glossy and crack-free.
Category
Tone/Texture
Type
Film Former

Ingredient Ratings

Overall Rating

Good

Comedogenic Risk

None

Skin Benefits

Forms a flexible, lustrous layer that resists cracking and helps makeup maintain a polished look longer.

Uses In Skincare & Cosmetics

Used in nail topcoats, liquid eyeliners, and long-wear lip colors to improve shine and durability.

Comedogenic Rating

This ingredient is not typically evaluated for comedogenicity, and no standardized rating is available.

Safety

Considered low risk for irritation in most users. If sensitivity develops, such as itching or redness, stop use and reassess exposure, especially around the eyes.

Is Cellulose Acetate Butyrate a Good Ingredient?

It forms flexible, glossy films that improve wear and appearance, with generally low irritation risk, which is enough for a Good rating, though its skincare activity is minimal.