INCI name

METHYL TRIMETHICONE

Methyl trimethicone

A light, low-molecular-weight silicone.

What it is

Methyl trimethicone is a small branched siloxane (chemically heptamethyl-3-(trimethylsilyloxy)trisiloxane). CosIng lists it as a solvent and a hair- and skin-conditioning agent.

Where it is used

Used in hair serums, sunscreens, makeup and creams.

Limits of interpretation

The INCI list shows which ingredients are present, not how much of each. Above 1%, ingredients are listed in descending order of weight; below 1% the order is free.

Its position on the list does not show whether it acts mainly as a solvent or as a conditioning agent in a given formula.

Functions

Hair conditioning
Enhancing the appearance and feel of hair. Leaving the hair easy to comb, supple, soft and shiny and/or imparting volume, lightness, gloss, texture, etc.
Solvent
Dissolving other components of cosmetics. Solvents are usually liquids (aqueous and nonaqueous).
Skin conditioning – miscellaneous
Enhancing the appearance of dry and/or damaged skin by reducing flaking and restoring suppleness.

EU regulation

This ingredient is not listed in the annexes of Regulation (EC) No 1223/2009 in the CosIng data.

Products with this ingredient (48)

Check a full ingredient list