Polyurethane-20
molecular structure · PubChem
AKA: PU-20
Synthetic
Occlusive
Not Clean
5-Isocyanato-1-(isocyanatomethyl)-1,3,3-trimethylcyclohexane, polymer with polybutanediol (12 mol average) and oxepan-2-one/2,2-dimethyl-1,3-propanediol copolymer, reaction products with 5-amino-1-(aminomethyl)-1,3,3-trimethylcyclohexane, reaction product
CAS #
-
Form
Powder
Functions
Binding
Film Forming
Creates a physical seal on skin to lock moisture in and keep irritants out. The "slugging" ingredient — barrier protection.
Holds Formula Together
Creates Protective Barrier
Creates protective layer
Holds ingredients together
Traditional Use
Synthetic polymer used in contemporary cosmetics for flexible film-forming and conditioning properties. Developed to improve texture, stability, and water resistance in cosmetic products.
Skin Types
●all-skin-types
Best For
General
Pregnancy & Breastfeeding Safe
Yes
The paper trail
🔬Peer-reviewednone on file
⚖️Regulatory1 listing →
🛡️Safety-assessed1 review →
Counts, not a verdict. A listing isn't a study. The trail, you decide.
Verified Jun 2026
Data: CosIng · EWG · CIR