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By The Skin Formulary Team

Formula IngredientFilm Former

Castor Oil/IPDI Copolymer

INCI: Castor Oil/IPDI Copolymer

Castor oil/IPDI copolymer is a synthetic polymer derived from castor oil and isophorone diisocyanate (IPDI). It functions primarily as a film-forming and oil-thickening agent, creating clear oily gels and helping to suspend particles such as pigments, glitters, and mineral UV filters in oil-based formulations. It is commonly used in premium cosmetic products.

Category

Film Former

Irritation Risk

Low

Skin Types

all skin types, dry, normal

What does this do in a formula?

oil thickening, film forming, particle suspension, clear gel formation, texture enhancement

Important Considerations

Irritation Risk

Low Risk

Generally well tolerated at typical cosmetic concentrations. No known irritation concerns. No EU Annex II or III restrictions.

Sun Sensitivity Risk

No Risk

Does not increase photosensitivity.

Pregnancy Concerns

Safe

No reproductive or developmental concerns. Polymeric ingredient that does not penetrate the skin.

About This Ingredient

Castor oil/IPDI copolymer is a synthetic polymer derived from castor oil and isophorone diisocyanate (IPDI). It functions primarily as a film-forming and oil-thickening agent, creating clear oily gels and helping to suspend particles such as pigments, glitters, and mineral UV filters in oil-based formulations. It is commonly used in premium cosmetic products.

Products with Castor Oil/IPDI Copolymer

Shop products that contain Castor Oil/IPDI Copolymer