C24-28 Alkyldimethylsiloxy Trimethylsiloxysilicate ●
TL;DR. This ingredient is a synthetic film-forming and water-resistance agent used to improve wear, adhesion, transfer resistance, and payoff in makeup, sunscreen, and lip products.
What does C24-28 Alkyldimethylsiloxy Trimethylsiloxysilicate do in a cosmetic formula?
This ingredient is a synthetic film-forming and water-resistance agent used to improve wear, adhesion, transfer resistance, and payoff in makeup, sunscreen, and lip products.
Is C24-28 Alkyldimethylsiloxy Trimethylsiloxysilicate clean?
From a clean-beauty perspective, it has friction because it is a non-biodegradable synthetic polymeric material rather than a skin-benefit ingredient. It is generally low-irritation, but many restrictive standards flag this type of persistent silicon-based resin.
Is C24-28 Alkyldimethylsiloxy Trimethylsiloxysilicate sustainable?
This material is synthetically manufactured from organosilicon chemistry and long-chain alkyl inputs, with limited renewable-sourcing advantages. It is not readily biodegradable and is expected to persist in the environment after rinse-off or disposal.
Is C24-28 Alkyldimethylsiloxy Trimethylsiloxysilicate COSMOS-approved?
It is not permitted under COSMOS-natural or COSMOS-organic standards. Its Green Chemistry fit is weak because it relies on synthetic silicon-based polymer chemistry, limited biodegradability, and persistence rather than renewable feedstocks or benign end-of-life behavior.
How does C24-28 Alkyldimethylsiloxy Trimethylsiloxysilicate work chemically?
The molecule is a highly branched silicon-oxygen network capped with methyl groups and long C24-C28 alkyl side chains, which makes it very hydrophobic and compatible with waxes and oils. It is typically used as a low-to-moderate level film former in anhydrous or emulsion systems, where it supports water resistance, pigment adhesion, and transfer-resistant wear.
Last updated 2026-05-14