Butyl Methoxy Dibenzoyl Methane (avobenzone) is a widely used organic UVA filter that absorbs ultraviolet A radiation to help prevent sun-induced skin damage. It is photo-unstable on its own and is typically combined with stabilizers or other filters to maintain efficacy.
| Reported effect | How often | Notes |
|---|---|---|
| Contact dermatitis / skin irritation | Uncommon | Mild redness, itching or stinging at application site. |
| Allergic contact dermatitis | Rare | Confirmed sensitization is infrequent but documented in patch-test studies. |
| Photoallergic / photocontact dermatitis | Rare | Reaction triggered by combined exposure to the ingredient and sunlight. |
| Degradation products from photoinstability | Uncommon | Breakdown when unstabilized may reduce protection and rarely contribute to irritation. |
Frequencies reflect typical cosmetic use reported in the literature, not a guarantee for your skin.