Trimethylsiloxysilicate

AKA “RefChem:899896”

Mineral

Ingredient Facts

Trimethylsiloxysilicate

AKA: RefChem:899896

Mineral · Emollient · EWG: 1

Synthetic

Emollient

Skin Conditioner

Silicone

Mineral

Clean

A lightweight silicone that smooths skin and helps lock in moisture while preventing product separation. Creates an invisible, comfortable finish without heaviness.

Formula

C6H18O5Si3

Mol. Weight

254.46

CAS #

68611-44-9; 1015787-46-8; 211811-62-0; 68909-20-6; 112153-70-5; 112153-71-6; 1123693-37-7; 70536-25-3; 371755-66-7; 1158846-14-0

Form

Powder

See origin →

Functions

Antifoaming

Emollient

Fills in the tiny cracks between skin cells to make everything feel smooth and soft. The "silky finish" ingredient.

Locks In Moisture

Traditional Use

Developed as a silicone-based polymer in the late 20th century. Used in cosmetics as a mattifying agent and skin-feel enhancer, particularly in powders, foundations, and silicone-based skincare products.