Polyurethane-11
AKA “Polyurethane 11
Ingredient
Ingredient Facts
Polyurethane-11
AKA: Polyurethane 11
Ingredient · Film Forming · EWG: 1
Synthetic
Occlusive
Clean
Adipic acid, 1,4-butanediol, isophthalic acid, methylene bis-(4-cyclohexylisocyanate), neopentyl glycol and trimethylolpropane copolymer
CAS #
-
Form
Powder
See origin →
Functions
Film Forming
Creates a physical seal on skin to lock moisture in and keep irritants out. The "slugging" ingredient — barrier protection.
Creates Protective Barrier
Traditional Use
Synthetic polymer developed in the mid-20th century for cosmetic use as a film-forming agent and binder. Designed to provide flexible, water-resistant coatings in nail polishes and other cosmetic formulations.
Skin Types
all-skin-types
Best For
General
Pregnancy & Breastfeeding Safe
Yes
EWG
1
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