Ingredient · Updated
Trimethylsiloxysilicate
Found in 6 products
What is Trimethylsiloxysilicate?
Trimethylsiloxysilicate is a silicone-based polymer primarily used in cosmetics and personal care products. It is synthesized through the reaction of siloxane compounds to create a stable, film-forming agent.
This compound is commonly used for its ability to form a flexible, long-lasting film on the skin's surface, which helps the product adhere better and resist water. It is valued in makeup and sunscreens for providing improved wear and durability. While generally considered safe for topical use, some concerns exist regarding its environmental impact, as silicones can accumulate in ecosystems.
When you see it on a label, it is often included to enhance product performance, especially in waterproof and long-wear formulations.
Commonly found in: sunscreen, foundation, lipstick, mascara, eyeshadow
What to watch
- Silicones like trimethylsiloxysilicate can persist in the environment, potentially affecting ecosystems.
Benefits
- Provides long-lasting, water-resistant properties in cosmetics and sunscreens.
The FDA recognizes it as a safe ingredient in cosmetics, with no specific restrictions.
Research generally supports its safety for topical use, but environmental persistence is a growing concern.
As a synthetic compound, it is not derived from animal sources and is typically considered vegan.
Sources: Status of Siloxanes in Cosmetics
Scout's take
Silicone resin used for waterproofing. Bioaccumulative and persistent in the environment. Can trap other chemicals against the skin and impede natural moisture regulation.
The case against
There are minimal risks associated with this ingredient, though it may cause irritation in sensitive individuals.
from the analysis of Sun Bum Signature SPF 30 LotionGenerally considered safe with minimal risks.
from the analysis of Tide Original Liquid Laundry Detergent 100 LoadsThe case for
It enhances the water resistance and durability of the sunscreen.
from the analysis of Sun Bum Signature SPF 30 LotionImproves product texture and spreadability.
from the analysis of Tide Original Liquid Laundry Detergent 100 LoadsMore from Scout's analyses
Trimethylsiloxysilicate is a silicone compound that can create a barrier on the skin. While it provides a smooth application, it may contribute to skin irritation and has a risk of bioaccumulation.
from the analysis of Rare Beauty by Selena Gomez Stay Vulnerable All-Day Waterproof EyelinerTrimethylsiloxysilicate is used as a film-forming agent in cosmetics. It helps to create a water-resistant barrier on the skin. It is generally considered safe for use in cosmetics.
from the analysis of Sun Bum Signature SPF 30 LotionTrimethylsiloxysilicate is a silicone-based compound used to improve the texture and spreadability of the product. It does not contribute directly to cleaning efficacy.
from the analysis of Tide Original Liquid Laundry Detergent 100 LoadsAll 6 products with Trimethylsiloxysilicate
Where Trimethylsiloxysilicate shows up
Higher-scoring picks without Trimethylsiloxysilicate
Products from the same categories whose analyzed ingredient list does not include Trimethylsiloxysilicate, scoring 80 or above.
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