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Beta-Sitosterol

What Beta-Sitosterol is & what it does

Beta-Sitosterol is a plant-derived sterol found in many vegetable oils and seeds. In skincare and sunscreen formulas it is commonly used as an emollient and skin conditioning agent, helping support the skin's surface and improve texture. Its lipid-like structure also lets it act as a co-emulsifier and stabilizer in some products.

What does Beta-Sitosterol do in skincare?

Beta-Sitosterol is a plant sterol used in skincare and sunscreens as an emollient and skin conditioning agent. It helps soften the skin and can support a smoother surface feel. Its lipid-like structure also lets it help stabilize some emulsions.

Is Beta-Sitosterol safe?

Beta-Sitosterol is widely used in cosmetics and is generally considered safe at typical use levels. It is a plant-derived lipid that is well tolerated by most skin types. Adverse reactions in topical products are uncommon.

Is Beta-Sitosterol natural or synthetic?

Beta-Sitosterol is a naturally occurring plant sterol found in many seeds and vegetable oils. The cosmetic ingredient is typically derived from plant sources. This generally makes it suitable for plant-based and vegan formulas, though the brand's policy confirms the overall product status.

Sunscreens with Beta-Sitosterol

We rate 86 sunscreens that contain it, showing the top 10 by overall score:

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