Soybean / Soy Ferment

Soy-derived skincare ingredients can include soybean extract, soy proteins and fermented soy materials. Soy contains proteins, lipids, isoflavones and other compounds whose cosmetic composition changes substantially depending on extraction and fermentation.

Clinical reviews report that specific topical soy formulations can improve mottled pigmentation, texture and radiance, including studies in combination with niacinamide. Fermented soy should not be assumed chemically identical to ordinary soybean extract, so the product's exact INCI and supporting formula remain important.