Antioxidants help neutralize free radicals generated by UV exposure, pollution, and other environmental stressors, thereby reducing oxidative damage to skin. They are commonly included to support skin barrier resilience and complement sun protection.
| Reported effect | How often | Notes |
|---|---|---|
Mild irritation or stinging | Uncommon | More likely at higher concentrations or with potent actives like vitamin C. |
Contact dermatitis / allergic reaction | Rare | Can occur in individuals sensitive to specific antioxidant compounds or formulation excipients. |
Transient redness | Uncommon | Usually self-resolving and dose-dependent. |
Photosensitivity reaction | Very rare | Reported with certain unstable antioxidant formulations; not a substitute for sunscreen. |
Frequencies reflect typical cosmetic use reported in the literature, not a guarantee for your skin.