Stearyl alcohol has emollient properties and also can function as an emulsifier and thickener in products. In stick products, such as deodorants and antiperspirants, it helps to emulsify the active ingredient and fragrance into the wax base. It also helps modify the physical texture of the stick's waxy base.
Stearyl alcohol is prepared from stearic acid or some fats by the process of catalytic hydrogenation. It has low toxicity.
Who should use it: Stearyl alcohol has a long history of use, as well as numerous research studies proving its safety; all skin types can use it, says Lain. Works well with: It's most often found in products requiring the combination of oils and waters, such as lotions and creams.
Cosmetic products, including those labeled "alcohol free," may contain other alcohols, such as cetyl, stearyl, cetearyl, or lanolin alcohol. These are known as fatty alcohols, and their effects on the skin are quite different from those of ethyl alcohol.
