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Polyurethane-57
AKA “Polyurethane”
Synthetic
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Ingredient Facts
Polyurethane-57
Synthetic · Binding | Film Forming | Skin Conditioning - Emollient | Smoothing · EWG: 4
Plant-Derived
Emollient
Occlusive
Skin Conditioner
Synthetic
Clean
Helps create a lightweight, flexible film on skin that holds makeup and skincare in place without feeling heavy or sticky.
CAS #
930592-39-5
Form
Powder
Plant-Derived
Synthetic. Derived from petrochemical sources, polyurethane-57 belongs to the polyurethane polymer chemical family. Synthesized through the reaction of polyols and isocyanates via catalytic polymerization.
Function
Binding | Film Forming | Skin Conditioning - Emollient | Smoothing
Benefits
Holds Formula Together
Holds ingredients together
Traditional Use
Synthetic polymer developed in the mid-20th century. Used in cosmetics as a film-forming and conditioning agent in hair and skin products.
Skin Types
all-skin-types
Best For
Target
General
Melanin-Rich Skin
Suitable
Pregnancy Safe
Yes
EWG Score4
CIR Safety Findings
medical-approval, all-shades-safe, Not a Sensitizer
Regulatory Status
USA✔ permitted
EU⚠ restricted
JAPAN⚠ restricted
CANADA⚠ restricted
Verified Feb 2026
Data: CosIng · EWG · CIR
Polyurethane-57 — Duck Heart Ghost