Antioxidants are ingredients that neutralize free radicals and reactive oxygen species, helping to protect skin from oxidative stress caused by UV exposure and environmental pollutants. They are commonly included in skincare to support skin defense and may aid in reducing signs of photoaging.
| Reported effect | How often | Notes |
|---|---|---|
| Mild skin irritation or stinging | Uncommon | More likely with high concentrations or sensitive skin, particularly with potent antioxidants like vitamin C. |
| Erythema (redness) | Uncommon | Transient redness can occur, especially on freshly applied formulations. |
| Allergic contact dermatitis | Rare | Some antioxidant ingredients can act as sensitizers in predisposed individuals. |
| Dryness or peeling | Rare | Reported with certain formulations or when combined with other actives. |
Frequencies reflect typical cosmetic use reported in the literature, not a guarantee for your skin.