The mechanism behind Isoflavones (Soy) is precise: Phytoestrogens bind estrogen receptors; stimulate collagen; inhibit tyrosinase. That specificity is what separates it from broader-category ingredients that work in less targeted ways.
The scientific name is Soy Isoflavones. Phytoestrogens bind estrogen receptors; stimulate collagen; inhibit tyrosinase. This mechanism is consistent across properly formulated products, which means the real variable is concentration and delivery system.
Typical working concentration is 0.1–5%. Best suited to all skin types skin. Primary applications: antioxidant, estrogenic activity, brightening, anti-aging.
Works well with: Niacinamide, hyaluronic acid.
Genistein and daidzein are key isoflavones; post-menopausal skin particularly benefits.