What it is
PEG-8 laurate is made by reacting lauric acid with polyethylene glycol containing roughly eight ethylene oxide units. In sunscreens it functions as a nonionic emulsifier and surfactant that helps blend oil and water phases and keep the formulation uniform. It contributes to a smooth, spreadable texture and stable product feel.
Safety & warnings
PEG-8 laurate is widely used and generally well tolerated as a mild nonionic emulsifier. PEG-class ingredients can theoretically carry trace processing impurities, so reputable suppliers purify to cosmetic-grade specifications. It is not considered a notable allergen, though any surfactant may contribute to mild irritation on highly compromised skin.
Origin & sourcing
Synthetic. It is produced by esterifying lauric acid, a fatty acid that may be sourced from coconut or palm oils, with synthetic polyethylene glycol.
Questions everyone asks
What does PEG-8 laurate do in a formula?
It acts as an emulsifier and surfactant, helping the oil and water portions of a sunscreen mix evenly and stay stable for a smooth application.
Is PEG-8 laurate a UV filter?
No. It is a formulation aid that supports texture and emulsion stability and provides no sun protection by itself.