What it is
This ingredient is a silicone crosspolymer built from a dimethicone backbone carrying both PEG-12 and PPG-20 side chains within a crosslinked network. The mixed polyether chains give it surfactant-like behavior that stabilizes water-in-silicone emulsions, while the crosslinked structure contributes body and a soft, cushioned application feel. It is valued in sunscreens for helping suspend UV filters and pigments while leaving a non-greasy finish.
Safety & warnings
Crosslinked silicone polyether materials are generally well tolerated and are not typically associated with irritation, sensitization, or comedogenicity at usual formula levels. They are not recognized fragrance allergens.
Origin & sourcing
Synthetic; made by crosslinking a dimethicone backbone modified with polyethylene glycol and polypropylene glycol side chains.
Questions everyone asks
What does this crosspolymer do in sunscreen?
It emulsifies and stabilizes silicone-based systems while adding a smooth, cushioned texture and helping suspend UV filters and pigments.
Will it feel greasy on skin?
It is generally formulated for a lightweight, non-greasy finish, which is part of why it is used in modern sunscreen textures.