Genistein Glucoside
A soy isoflavone. It works as an antioxidant; the maker links it to skin firmness, independent data are limited. Well tolerated.
Evidence by route
Topical application
A plant antioxidant. Safe; independent data limited.
- CIR Cosmetic Ingredient Review safety assessment
How to read tiers A–F
- BLimited evidence. One RCT or several controlled studies with limitations
Tolerability and safety
- Irritation potential
- Low
- Allergen risk
- Low
- Pregnancy
- Safe
- Suitable for
- Normal, Dry, Combination, Oily, Sensitive
About this ingredient
Genistein glucoside (INCI Genistein Glucoside) is a soy isoflavone bound to a sugar molecule, which improves its stability. In cosmetics it is used as a plant-derived antioxidant and linked to firmness because of its structural similarity to compounds that act on skin estrogens. The antioxidant side makes sense: isoflavones help neutralize free radicals in the skin. For firmness the maker draws that link, but independent data is scarce. As a support antioxidant it works; as a standalone firming active the evidence is modest. Applied topically it is not systemically relevant, so at cosmetic concentrations it can be used during pregnancy and breastfeeding without issue. Tolerability is good. Irritation and allergy potential are both low, suitable for sensitive skin. There is no data on relevant comedogenicity.
Frequently asked questions
Is Genistein Glucoside safe during pregnancy?
Genistein Glucoside is considered safe during pregnancy at typical cosmetic concentrations. Systemic absorption through the skin is minimal.
What skin types is Genistein Glucoside for?
Genistein Glucoside suits: normal, dry, combination, oily, sensitive.
What is Genistein Glucoside and what does it do in cosmetics?
A soy isoflavone.
What's the INCI name for Genistein Glucoside?
The INCI name is Genistein Glucoside.
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