Octylmethoxycinnamate (octinoxate, ethylhexyl methoxycinnamate) is one of the most widely used organic UVB-absorbing sunscreen agents, protecting skin against UVB-induced sunburn and damage. It is oil-soluble and commonly incorporated into sunscreens and daily-wear cosmetics.
| Reported effect | How often | Notes |
|---|---|---|
Contact irritation or stinging | Uncommon | Mild transient irritation, especially on sensitive or compromised skin. |
Allergic contact dermatitis | Rare | Documented as a contact allergen in patch-test studies, though sensitization is infrequent. |
Photoallergic/photocontact dermatitis | Rare | Reactions triggered after UV exposure have been reported in susceptible individuals. |
Eye irritation | Uncommon | Can cause stinging if formulations migrate into the eyes. |
Possible endocrine activity (weak estrogenic effects) | Very rare | Reported in in-vitro and animal studies; clinical relevance in humans at cosmetic-use levels is uncertain. |
Frequencies reflect typical cosmetic use reported in the literature, not a guarantee for your skin.