Octinoxate (octyl methoxycinnamate) is an organic UVB-absorbing filter used in sunscreens and cosmetic products to help protect skin from ultraviolet-induced damage. It is one of the most widely used chemical UV filters in topical formulations.
| Reported effect | How often | Notes |
|---|---|---|
| Contact irritation or mild stinging | Uncommon | Transient redness or stinging, particularly on sensitive or compromised skin. |
| Allergic contact dermatitis | Rare | Sensitization reactions reported in patch-testing studies. |
| Photoallergic or photocontact dermatitis | Rare | Reaction triggered by combined exposure to the ingredient and sunlight. |
| Potential endocrine-disrupting (estrogenic) activity | Rare | Observed mainly in in vitro and animal studies; relevance to human topical use is debated. |
Frequencies reflect typical cosmetic use reported in the literature, not a guarantee for your skin.