Trimethylpentanediol/Adipic Acid Copolymer

Trimethylpentanediol/adipic acid copolymer is a synthetic polyester formed from trimethylpentanediol and adipic acid. It forms a flexible, durable film that improves adhesion, rub resistance, and uniform application in makeup and skincare.
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Ingredient Snapshot

Overview
A film-forming polymer that helps makeup grip skin and resist smudging.
Category
Tone/Texture
Type
Film Former

Ingredient Ratings

Overall Rating

Good

Comedogenic Risk

None

Skin Benefits

Helps makeup stay put by improving grip and resisting smudging, and promotes a smoother, more even look once the product sets.

Uses In Skincare & Cosmetics

Common in long-wear liquid foundations, eyeliners, and mascaras for durability, and also found in setting sprays and gel-cream primers to boost hold.

Comedogenic Rating

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

Safety

Low likelihood of irritation for most users. Can feel tight or contribute to buildup if layered without thorough cleansing. Avoid getting into eyes if sensitive.

Is Trimethylpentanediol/Adipic Acid Copolymer a Good Ingredient?

It rates Good because it consistently forms a flexible, durable film that boosts wear and uniformity in makeup. Performance is strong, but clinical data for skin benefits are limited, and some users may find film-formers feel occlusive if not removed well, which holds it at Good.

Products with Trimethylpentanediol/Adipic Acid Copolymer

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