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Ensulizole (Phenylbenzimidazole Sulfonic Acid)

A water-soluble chemical sunscreen mostly absorbing in the UVB range (peak ~306 nm).

Category/Notes

UVB filter (water-soluble)

Benefits

Protects against UVB-induced sun damage. Ensulizole is often used in light, non-greasy sunscreen formulas (like gels) due to its water solubility. It contributes to SPF and helps prevent sunburn and DNA damage in the epidermis. While potent against UVB, it offers minimal UVA coverage, so it’s combined with UVA filters for broad protection. Ensulizole’s inclusion helps products remain cosmetically elegant (non-oily) while still defending the skin from burning rays.

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Ensulizole (Phenylbenzimidazole Sulfonic Acid)

June 23, 2025

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