Sodium Benzotriazolyl Butylphenol Sulfonate is a water-soluble benzotriazole-based UV absorber used in sunscreens and cosmetic formulations to absorb UVA/UVB radiation and help photostabilize other UV filters and formula components. It is sometimes marketed under trade names such as Neo Heliopan AP.
| Reported effect | How often | Notes |
|---|---|---|
Skin irritation | Rare | Mild transient redness or stinging reported in sensitive individuals. |
Allergic contact dermatitis | Very rare | Isolated case-type reports; contact sensitization is uncommon. |
Eye irritation | Rare | Possible if product enters the eyes during application. |
Frequencies reflect typical cosmetic use reported in the literature, not a guarantee for your skin.