Polyurethane-20
AKA “Polyurethane-20, PU-20
Ingredient
Ingredient Facts
Polyurethane-20
AKA: PU-20
Ingredient · Film Forming · EWG: 4
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
See origin →
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
EWG
4
CIR
Safe as used
Pregnancy
Yes
CIR Safety Findings
Not a Sensitizer
medical-approval
all-shades-safe
Regulatory Status
USApermitted
EUrestricted
JAPANrestricted
CANADArestricted
Verified Jun 2026
Data: CosIng · EWG · CIR