Cosmetic Ingredient

Polyurethane-18

INCI: POLYURETHANE-18
CAS Not assigned (complex copolymer)
Butanediisocyanate, polymer with hydroxypoly(oxy-1-methylpropylene)ol and 2,2-di(hydroxymethyl)propanoic acid, tris(2-hydroxyethyl)amine salts, reaction products with hydrazine and C1-8-alkanediamines
Generally Safe
This ingredient has a good safety profile based on available data.
Purpose

Function

Film former
Profile

Properties

Silicone
Silicone free
Malassezia
Safe
Fungal Acne
Safe
Details

Description

Butanediisocyanate, polymer with hydroxypoly(oxy-1-methylpropylene)ol and 2,2-di(hydroxymethyl)propanoic acid, tris(2-hydroxyethyl)amine salts, reaction products with hydrazine and C1-8-alkanediamines

EU Restricted — Annex III
1 official EU restriction with concentration limits & label requirements
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Reference

Identifiers

CAS Number
Not assigned (complex copolymer)
INCI
POLYURETHANE-18
Category
Cosmetic Ingredient
Updated
Apr 2, 2026