Trisiloxane
Volatile silicone with very low viscosity. Gives an instant dry slip and evaporates quickly without leaving a film. Common in sunscreens and primers for a soft-focus effect. Pregnancy-safe.
Supporting ingredient
It gives a product its texture, stability or shelf life. It has no claimed effect on the skin, so an efficacy tier does not apply. What is known about its safety is below
Tolerability and safety
- Irritation potential
- Low
- Allergen risk
- Low
- Pregnancy
- Safe
- Suitable for
- Normal, Dry, Combination, Oily, Sensitive
About this ingredient
Trisiloxane is a linear volatile silicone with three silicon atoms. INCI: Trisiloxane. It is produced by condensation of methylchlorosilanes followed by purification. It is used as a solvent for other silicones and as a sensorial modifier. In cosmetics it works as a dry emollient: the molecule is too large to penetrate the stratum corneum, so it stays on the surface, gives a silky slip, and evaporates within a few minutes of application. It is especially valued in sunscreens – it improves the spread of mineral filters and reduces the white cast. Use levels run from 1 to 15%. Pregnancy safety. There is no systemic absorption – the ingredient evaporates from the skin surface. CIR rates the safety profile as acceptable. Unlike the cyclic silicones D4 and D5, trisiloxane is not subject to EU restrictions for endocrine effects. Skin profile. Low irritation and allergen potential. Non-comedogenic. Suitable for all skin types. It has no standalone active effects – purely a sensorial component. In formulas for oily and combination skin it helps create a matte finish without greasy shine.
Frequently asked questions
Is Trisiloxane safe during pregnancy?
Trisiloxane is considered safe during pregnancy at typical cosmetic concentrations. Systemic absorption through the skin is minimal.
What skin types is Trisiloxane for?
Trisiloxane suits: normal, dry, combination, oily, sensitive.
What is Trisiloxane and what does it do in cosmetics?
Volatile silicone with very low viscosity.
Is Trisiloxane comedogenic?
On the Fulton scale 0/5 – non-comedogenic. For acne-prone skin, a rating of 3 or higher suggests choosing an alternative.
What's the INCI name for Trisiloxane?
The INCI name is Trisiloxane. It may also appear as: Hexamethyldisiloxane derivative.
See Trisiloxane in a product composition right on the store page
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Similar role in the formula
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