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SOY STEROL ACETATE

86

Safety score · 0–100

Good

Derived from EU CosIng regulatory status, PubChem hazard data and published research. How we score.

About

Plant-derived sterol acetates from soybean oil — related to cholesterol-like compounds that naturally occur in skin — used as skin-conditioning and barrier-supporting emollients.

Soy Sterol Acetate is an esterified sterol mixture derived from soybean (Glycine max) oil. Soy sterols are chemically similar to cholesterol and other phytosterols (campesterol, stigmasterol, sitosterol). Sterols are essential components of the stratum corneum's lamellar bilayer structure, and topical application can support skin barrier function and reduce water loss. Acetylation (adding acetate groups) increases the molecule's lipophilicity and stability. These compounds are not restricted in cosmetics and have a well-established safety profile. Soy derivatives may carry concerns about phytoestrogen content, but sterol acetates have minimal estrogenic activity.

Skin benefits

  • Barrier-supporting emollient
  • Reduces transepidermal water loss
  • Conditions and softens skin
  • May support skin lipid balance
  • Anti-inflammatory properties of phytosterols

Known concerns

  • Soy allergen — individuals with soy allergy should exercise caution
  • Very low estrogenic activity from sterol acetates (negligible concern)

References

EU

EU CosIng database

European Commission cosmetic ingredient registry — regulatory status, restrictions, authorised functions.

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This profile is for educational purposes and does not constitute medical advice. Regulatory status and scientific understanding evolve — always read the physical product label and consult a healthcare professional for personal concerns.