The Steareth ingredients are prepared by reacting ethylene oxide with stearyl alcohol where the numerical value in the name corresponds to the average number of units of ethylene oxide.
For example, Steareth-100 is prepared using an average of 100 units of ethylene oxide reacted with stearyl alcohol.

Steareth成分是通過使環氧乙烷與硬脂醇反應製備的，其中名稱中的數值對應於環氧乙烷的平均單位數量。
例如，使用平均100個環氧乙烷與硬脂醇反應制得Steareth-100。

https://cosmeticsinfo.org/ingredient/steareth-100