定義
Polyurethane-25 is a complex polymer formed by the reaction of dihydroxypolyoxobutylene (degree of polymerization 12-30), dimethylol propionic acid, meta-tetramethylenexylenediisocyanate, isophoronediisocyanate and trimethoylpropane. The prepolymer is neutralized with triethylamine and chain extended with C1-8 alkyl diamine
化粧品での役割
粉体をまとめて形を保つBINDING肌を良い状態に保つ（CosIng 包括分類）SKIN CONDITIONING髪をカールまたはストレートにするHAIR WAVING OR STRAIGHTENING
安全性・規制情報
Reviewed by CIR: Final Report: Safety Assessment of Polyurethanes as Used as Cosmetics
出典: 米国CIR 安全性評価