What it is
Dimethicone Crosspolymer-3 is a silicone elastomer formed by cross-linking dimethicone into a three-dimensional network. In formulas it swells in silicone fluids to build viscosity and give a light, velvety, non-greasy slip on application. It is widely used in sunscreens, primers, and foundations to improve spreadability, blur the appearance of pores and fine lines, and absorb excess oil for a smoother finish.
Safety & warnings
Silicone elastomers like this are generally well tolerated and are considered non-irritating and non-sensitizing for most users. They are typically regarded as low on the comedogenicity scale and are not fragrance allergens.
Origin & sourcing
Synthetic silicone polymer.
Questions everyone asks
Why is Dimethicone Crosspolymer-3 used in sunscreens?
It improves the texture, giving a silky, dry feel, helping the product spread evenly, and providing a soft-focus blurring effect on the skin surface.
Does it leave a greasy residue?
No. Silicone elastomers are designed to give a light, powdery, non-greasy finish rather than an oily film.