Polyurethane-8
AKA “Film-forming polymer
Synthetic
Ingredient Facts
Polyurethane-8
AKA: Film-forming polymer
Synthetic · Film Forming · EWG: 4
Synthetic
Occlusive
Synthetic
Clean
Helps create a smooth, long-lasting finish on skin and hair by forming a flexible protective layer that keeps products in place throughout the day.
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.
Plasticiser
Creates protective layer
Holds ingredients together
Adds flexibility
Traditional Use
A synthetic polymer developed in the mid-20th century for industrial applications. Used in cosmetics as a film-forming agent and texture modifier in formulations like foundations and primers.
Skin Types
all-skin-types
Best For
General
Melanin-Rich Skin
Suitable
Pregnancy & Breastfeeding Safe
Yes
EWG
4
CIR
Safe w/Qualifications
Pregnancy
Yes
CIR Safety Findings
Not a Sensitizer
medical-approval
all-shades-safe
Regulatory Status
USApermitted
EUrestricted
JAPANrestricted
CANADArestricted
Verified Feb 2026
Data: CosIng · EWG · CIR
Polyurethane-8 — Duck Heart Ghost