Ingredient
Polysilicone-15 (Parsol SLX)
INCI name: Polysilicone-15
Parsol SLX
Dimethicodiethylbenzalmalonate
What it is
A silicone-based photostable UVB filter that also forms a water-resistant film to help a sunscreen stay in place.
How it works
It absorbs UVB at the skin surface and, being a large silicone polymer, stays on the surface with negligible skin penetration.
What it does
Film forming
UV filter
Concerns to know
-
Well tolerated
No significant safety concern is reported for this ingredient as used in cosmetics.