Stearoxytrimethylsilane
What Stearoxytrimethylsilane is & what it does
A silicone wax that conditions skin and gives a smooth, water-resistant film. It adds body and a velvety finish to the formula.
What does Stearoxytrimethylsilane do in skincare?
Stearoxytrimethylsilane is a silicone-based ingredient used mainly as an emollient and skin-conditioning agent. It is often paired with stearyl alcohol to give products a smooth, silky, water-resistant feel. In sunscreens it can help improve glide and leave a soft after-feel.
Is Stearoxytrimethylsilane comedogenic?
Specific comedogenicity data for this ingredient is limited, so a firm rating cannot be given. Silicone-derived ingredients are often described as low on the comedogenic scale, but how a full product performs on acne-prone skin varies. Patch testing is a reasonable precaution if you break out easily.
Is Stearoxytrimethylsilane natural or synthetic?
Stearoxytrimethylsilane is synthetic. It is a silicone compound that joins a trimethylsilane group with a stearyl (fatty) chain, made through industrial processing rather than taken directly from nature.
Sunscreens with Stearoxytrimethylsilane
We rate 9 sunscreens that contain it:
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Menaji Power Hydrator Plus Broad Spectrum Sunscreen SPF 30 + Tinted Moisturiser
73/100
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Equate Sport Sunscreen Spray, SPF 50
65/100
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up&up Kids Continuous Sunscreen Spray SPF 50
65/100
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HAMPTON SUN Spf 30 Continuous Mist
63/100
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SkinCeuticals Ultimate Uv Defense Spf 30
62/100
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Avon Anew Clinical Defend & Repair Multi-Shield Day Cream Spf 50 With Smartrepair
59/100
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Avon Anew Pollution Protect+ Day Defence Lotion Spf 50
58/100
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Avon Anew Solar Advance SPF 50 Ultra Matte Tinted Sun Protector
50/100
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Open Formula Spf 30 Tinted Moisturizer (Mixed Uv Filters)
49/100