Polyurethane-34

AKA: Polyurethane polymer, Film-forming agent
Synthetic
Not Clean
OriginPolyurethane-34 is synthesized from polyols and isocyanates, members of the polyurethane chemical family. It is produced through the polymerization reaction between polyol compounds and diisocyanates under controlled conditions.
Polyurethane-34 is a complex polymer that is formed in a multi-step reaction. A copolymer of Hexanediol, Neopentyl Glycol, and Adipic Acid is reacted with hexamethylene diisocyanate. The resulting polymer is further reacted with N-(2-aminoethyl)-3-aminoethanesulfonic acid and ethylenediamine
CAS #
-
Form
Powder
Skin Types
●all-skin-types
Best For
General
Pregnancy & Breastfeeding Safe
Yes
Functions
Binding
Holds Formula Together
Holds ingredients together
The paper trail
🔬Peer-reviewednone on file
⚖️Regulatory1 listing →
🛡️Safety-assessed1 review →
Counts, not a verdict. A listing isn't a study. The trail, you decide.
EWG
4
CIR
Safe as used
Pregnancy
Yes
Concentration Guide
Leave-on0.36–3.2%
Rinse-offNot reported
0%50%100%
CIR reported use · report published 2017
Regulatory Status
USA✔ permitted
EU⚠ restricted
JAPAN⚠ restricted
CANADA⚠ restricted
Verified Jun 2026
Data: CosIng · EWG · CIR