Genistein
INCI: GENISTEIN
An isoflavone extracted from soy. Acts as a phytoestrogen in the skin — stimulating collagen production, providing antioxidant protection, and mildly inhibiting melanin synthesis for a brightening effect.
Also known as: soy isoflavone genistein
Benefits
- ✓Phytoestrogen that binds skin estrogen receptors and stimulates collagen synthesis
- ✓Inhibits tyrosinase — mild brightening and dark-spot prevention
- ✓Antioxidant activity against UV-induced free radicals
Watch for
- ⚠Phytoestrogenic in vitro; at cosmetic concentrations, systemic hormonal effects are not expected
- ⚠Those with soy sensitivity should patch-test
Compatibility
In depth
What it does
An isoflavone extracted from soy. Acts as a phytoestrogen in the skin — stimulating collagen production, providing antioxidant protection, and mildly inhibiting melanin synthesis for a brightening effect. As an active ingredient, it is particularly valued for phytoestrogen that binds skin estrogen receptors and stimulates collagen synthesis, inhibits tyrosinase — mild brightening and dark-spot prevention, and antioxidant activity against uv-induced free radicals.
Skin type guide
Sensitive skin types should introduce this ingredient slowly and watch for any signs of irritation. Most other skin types tolerate it well.
How to use it
Works particularly well in an AM routine, where its antioxidant protection pairs naturally with daily SPF. Apply after cleansing and toning, before moisturiser and sunscreen.
Common questions
What ingredients work well with Genistein?
Genistein pairs particularly well with Niacinamide and Vitamin C. These combinations are generally considered synergistic — they complement each other's effects without interfering or causing irritation.