What it is
This material is a polyethylene glycol-modified silicone in which a dimethicone backbone is fitted with PEG side chains terminating in a methyl ether. The combination of a silicone backbone with water-compatible PEG groups makes it an effective emulsifier, particularly for water-in-silicone systems common in sunscreens. It contributes a smooth, light application feel and helps disperse pigments and UV filters evenly.
Safety & warnings
Silicone-based PEG emulsifiers of this type are generally well tolerated and are not commonly associated with irritation or sensitization at usual formula levels. They are not recognized fragrance allergens and are not considered comedogenic in typical use.
Origin & sourcing
Synthetic; produced by attaching polyethylene glycol chains to a dimethicone (silicone) backbone.
Questions everyone asks
Why is this silicone emulsifier used in sunscreen?
It helps blend water and silicone phases into a stable emulsion and gives a smooth, lightweight feel while helping disperse UV filters evenly.
Is PEG-11 Methyl Ether Dimethicone a silicone?
Yes. It is a silicone (dimethicone) backbone modified with PEG chains so it can function as an emulsifier.