Polyurethane-33
AKA “Polyurethane polymer, Film-forming agent
Ingredient
Ingredient Facts
Polyurethane-33
AKA: Polyurethane polymer, Film-forming agent
Ingredient · Binding · EWG: 4
Synthetic
Not Clean
Polyurethane-33 is a complex polymer formed by reacting dimethylolpropionic acid and a polyester composed of Adipic Acid, Hexylene Glycol, Neopentyl Glycol with methylene dicyclohexyldiisocyanate (SMDI) to form a prepolymer. The prepolymer is neutralized with triethylamine and then chain-extended with hydrazine
CAS #
-
Form
Powder
See origin →
Functions
Binding
Holds Formula Together
Holds ingredients together
Traditional Use
Synthetic polymer developed for cosmetic use to provide flexible, durable film-forming properties. Created to enhance product stability and application characteristics.
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