What it is
Glyceryl Stearate SE is the self-emulsifying (SE) version of glyceryl stearate, meaning it contains a small amount of an anionic soap component that gives it the ability to form emulsions more readily. In sunscreens and skincare it is used as a primary or co-emulsifier to blend oil and water phases and to provide a smooth, emollient skin feel. It also helps stabilize the formula and contributes to a rich, creamy texture.
Safety & warnings
Glyceryl stearate and its SE grade have a long record of safe use as cosmetic emulsifiers and are generally well tolerated. Because the self-emulsifying grade contains a small soap component, very high levels could be marginally more irritating than the non-SE form, but at normal use levels it is considered low risk.
Origin & sourcing
Synthetic processing of natural feedstocks; it is produced from glycerin and stearic acid, which can be sourced from vegetable or animal fats, with the self-emulsifying grade including a small amount of neutralized fatty acid soap.
Questions everyone asks
What does the SE in Glyceryl Stearate SE mean?
SE stands for self-emulsifying, indicating the ingredient includes a small soap component that helps it form emulsions more easily than plain glyceryl stearate.
What role does it play in a sunscreen?
It works as an emulsifier and emollient, binding the oil and water phases together and giving the cream a smooth, stable texture.