Castor Oil/IPDI Copolymer

Castor Oil/IPDI Copolymer is a film-forming polymer made by reacting castor oil-derived components with isophorone diisocyanate. It's used in cosmetics to lay down flexible, uniform films that boost wear, reduce transfer, and improve smooth application.
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Ingredient Snapshot

Overview
A castor-oil film-former that helps makeup wear longer.
Category
Tone/Texture, Skin Conditioning
Type
Film Former

Ingredient Ratings

Overall Rating

Good

Comedogenic Risk

None

Skin Benefits

Improves wear time and reduces smudging or transfer while giving a smoother glide during application, and helps products stay even and intact through the day.

Uses In Skincare & Cosmetics

Common in long-wear makeup such as mascaras, eyeliners, lipsticks, and transfer-resistant foundations, as well as in water-resistant sunscreens and tinted moisturizers.

Comedogenic Rating

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

Safety

Low likelihood of irritation or sensitization at typical cosmetic levels. Suitable for use around the eyes when formulated appropriately; avoid use on broken or very irritated skin.

Is Castor Oil/IPDI Copolymer a Good Ingredient?

It reliably improves wear and transfer resistance as a stable, inert film-former with typically low irritation potential, which earns it a Good rating; the benefits are performance-focused rather than treatment-oriented, but consistency across formulations supports the rating.

Products with Castor Oil/IPDI Copolymer

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