Bete-sitosterol ●
TL;DR. This ingredient is used as a skin-conditioning lipid and barrier-support agent, helping soften the feel of formulas and reduce transepidermal water loss. It can also support emulsion texture in oil-rich creams, balms, and barrier-care products.
What does Bete-sitosterol do in a cosmetic formula?
This ingredient is used as a skin-conditioning lipid and barrier-support agent, helping soften the feel of formulas and reduce transepidermal water loss. It can also support emulsion texture in oil-rich creams, balms, and barrier-care products.
Is Bete-sitosterol clean?
From a clean-beauty perspective, it is generally well-tolerated, not a common fragrance allergen, and has little restricted-list friction. The main quality consideration is purity, since plant-derived fractions can carry minor residual waxes, oils, or processing residues depending on refinement.
Is Bete-sitosterol sustainable?
This material is typically derived from vegetable oils or wood-pulp side streams, so its sustainability profile depends on crop source, land use, and traceability. It is biodegradable and not associated with the persistence concerns seen with many synthetic silicone or fluorinated materials.
Is Bete-sitosterol COSMOS-approved?
It is generally compatible with COSMOS-natural, and can be used in COSMOS-organic formulas when its sourcing and processing meet the standard’s allowed methods. It aligns well with Green Chemistry when recovered from renewable or upcycled plant-based streams using lower-impact extraction and purification.
How does Bete-sitosterol work chemically?
The molecule is a highly lipophilic C29 sterol with a single hydroxyl group, making it oil-soluble and useful in lamellar lipid systems rather than water-based gels. Typical cosmetic use is often in the 0.1% to 2% range, with best stability in anhydrous or emulsified systems protected from prolonged heat, light, and oxidation.
Last updated 2026-05-15