SunCat MTA is a trade name for a blend based on the organic UV filter Methylene Bis-Benzotriazolyl Tetramethylbutylphenol (Bisoctrizole/Tinosorb M), providing broad-spectrum UVA and UVB protection. It is used in sunscreens and daily-care products as a photostable particulate filter.
| Reported effect | How often | Notes |
|---|---|---|
Skin irritation or stinging | Uncommon | Mild transient irritation possible, especially around the eyes or on sensitive skin. |
Allergic contact dermatitis | Rare | Sensitization to organic UV filters is reported but infrequent for this molecule. |
Acneiform or follicular reactions | Rare | May occur in occlusive formulations on acne-prone skin rather than from the filter itself. |
Photoallergic reaction | Very rare | Considered photostable with low photoallergenic potential. |
Frequencies reflect typical cosmetic use reported in the literature, not a guarantee for your skin.