Tinosorb S (bis-ethylhexyloxyphenol methoxyphenyl triazine) is a broad-spectrum organic UV filter that absorbs both UVA and UVB radiation. It is photostable and commonly used in sunscreen formulations to provide broad protection and stabilize other filters.
| Reported effect | How often | Notes |
|---|---|---|
Contact irritation or mild stinging | Rare | Occasional mild irritation, especially on sensitive skin or near the eyes. |
Allergic contact dermatitis | Very rare | Isolated case reports; considered to have low sensitizing potential. |
Photoallergic reaction | Very rare | Uncommon given its photostability; rarely reported in patch/photopatch testing. |
Frequencies reflect typical cosmetic use reported in the literature, not a guarantee for your skin.