Castor Oil/ Ipdi Copolymer
AKA “Castor oil copolymer, Castor-IPDI polymer”
Synthetic
Ingredient Facts
Castor oil/ ipdi copolymer
AKA: Castor oil copolymer, Castor-IPDI polymer
Synthetic · Emollient · EWG: 1
Plant-Derived Synthetic
Emollient
Occlusive
Skin Conditioner
Plant Oil
Synthetic
Clean
Castor oil creates a protective, lightweight layer on skin and hair, helping lock in moisture and keep products in place throughout the day.
CAS #
68955-90-8
Form
Oil
See origin →
Functions
Film Forming
Creates a physical seal on skin to lock moisture in and keep irritants out. The "slugging" ingredient — barrier protection.
Skin Conditioning
A catch-all term for ingredients that improve how skin looks and feels — softer, smoother, more supple. The workhorse behind most moisturizers.
Emollient
Fills in the tiny cracks between skin cells to make everything feel smooth and soft. The "silky finish" ingredient.
Anti-Inflammatory
Moisturizing
Locks in moisture to keep skin soft and supple throughout the day
Strengthens Barrier
Creates protective layer
Traditional Use
A modern synthetic material combining castor oil with industrial polyisocyanate chemistry, developed for cosmetics in the late 20th century as a conditioning and film-forming agent.
Skin Types
●all-skin-types, gentle
Best For
General
Melanin-Rich Skin
Suitable
Pregnancy & Breastfeeding Safe
Yes
Verified Feb 2026
Data: CosIng · EWG · CIR