Soybean extract is a plant-derived ingredient rich in isoflavones, proteins, and fatty acids used in skincare for its antioxidant, skin-brightening, and emollient properties. It is reported to inhibit pigment transfer and support skin barrier function.
| Reported effect | How often | Notes |
|---|---|---|
| Allergic contact dermatitis | Uncommon | More likely in individuals with soy or legume allergies |
| Skin irritation or redness | Uncommon | Mild, typically transient and concentration-dependent |
| Contact urticaria | Rare | Hives reported mainly in soy-sensitized individuals |
| Estrogenic concern from isoflavones | Very rare | Theoretical; systemic effects from topical use are not well established |
Frequencies reflect typical cosmetic use reported in the literature, not a guarantee for your skin.