Silica Dimethyl Silylate

Silica Dimethyl Silylate is a hydrophobic fumed silica treated with dimethyl groups and used as a cosmetic rheology modifier. It's employed to thicken and stabilize formulas, add slip and blur, and reduce greasy feel on skin or hair.
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Snapshot

Overview
A silica powder that controls shine and blurs uneven texture.
Category
Oil Control, Tone/Texture
Type
Rheology Modifier

Ratings

Overall Rating

Great

Comedogenic Risk

None

Not typically evaluated for comedogenicity — no standardized rating available.

Is Silica Dimethyl Silylate a Good Ingredient?

This one earns Great because the hydrophobic silica reliably boosts oil control and texture while staying chemically inert and stable, with a long history of low irritation at typical use levels.

Skin Benefits

It helps control excess shine and gives a soft-focus, blurred look to uneven texture, contributing to a drier, non-tacky finish that can help makeup last longer.

Uses in Skincare & Cosmetics

It's common in mattifying primers, gel-creams, and liquid foundations to refine the finish, and it's also used in hair texturizing pastes and balms for a more touchable feel.

Safety

It's generally well tolerated on skin and irritation is uncommon. As a fine powder, avoid inhaling dust during handling or application. No widely recognized regulatory restrictions apply to topical use.