Steareth-21
Brij 721
硬脂醇聚醚-21
HLB：15.5
Cas No：9005-00-9
乳化剂、表面活性剂，黏度低，亲疏平衡值为 15.5。
Steareth-21 is a surfactant composed of polyethylene glycol polymer and stearyl alcohol. https://www.ewg.org/skindeep/ingredient/724159/STEARETH-21/#.WzXrvBZlCEc