Steareth-20 ek polyethylene glycol ether hai jo stearyl alcohol se banta hai. Ye ek nonionic emulsifier aur surfactant ka kaam karta hai jo oil aur water ko mix karne mein madad karta hai. Creams aur lotions ko stable aur thick banane ke liye use hota hai. Ye formulation mein ingredient balance ke liye hota hai, na ki koi treatment ingredient hai.