Trimethylsiloxysilicate

Trimethylsiloxysilicate is a crosslinked silicone resin made of siloxane units. Primers, foundations, and sunscreens use it to create a breathable, transfer-resistant film that extends wear time, blurs texture, and reduces surface shine.
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Snapshot

Overview
A silicone resin that blurs texture, controls shine, and extends wear.
Category
Tone/Texture, Oil Control, Color
Type
Film Former

Ratings

Overall Rating

Great

Comedogenic Risk

None

Considered non-comedogenic, with little to no likelihood of clogging pores.

Is Trimethylsiloxysilicate a Good Ingredient?

It rates Great as a well-studied silicone resin with excellent film integrity, high stability, and a low irritation profile, providing long wear and transfer resistance. Its inert, breathable film delivers that performance without relying on harsh fixation mechanisms.

Skin Benefits

Extends makeup longevity while giving a soft-focus, refined look, and helps control shine and resist transfer through daily wear.

Uses in Skincare & Cosmetics

Used in liquid lipsticks, waterproof eyeliners, and brow gels for stay-fast performance, and also appears in setting powders and mineral SPF sticks to improve adherence.

Safety

Typically low irritation and low sensitization risk, and generally non-comedogenic. May require thorough cleansing to prevent residue buildup, especially with long-wear formulas.