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.
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.
Our take
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.
What it does
Skin Benefits
Extends makeup longevity while giving a soft-focus, refined look, and helps control shine and resist transfer through daily wear.
Where you'll find it
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.
Before you use it
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.