Tetrahydrodiferuloylmethane (tetrahydrocurcumin) is a hydrogenated derivative of curcumin used in skincare as a colorless, more stable antioxidant. It helps neutralize free radicals and may inhibit melanin formation, contributing to skin-brightening and anti-aging effects.
| Reported effect | How often | Notes |
|---|---|---|
Mild skin irritation or redness | Rare | Generally well tolerated; transient irritation possible in sensitive individuals. |
Allergic contact dermatitis | Very rare | Isolated sensitization reports; uncommon compared to native curcumin. |
Frequencies reflect typical cosmetic use reported in the literature, not a guarantee for your skin.