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
Ingredient Ratings
Overall Rating
Great
Comedogenic Risk
None
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.
Comedogenic Rating
This ingredient has a comedogenic rating of 0. It is considered non-comedogenic and has little to no likelihood of clogging pores.
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.
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.