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成分是通过使环氧乙烷与硬脂醇反应制备的，其中名称中的数值对应于环氧乙烷的平均单位数量。
例如，使用平均100个环氧乙烷与硬脂醇反应制得Steareth-100。

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