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SESH INGREDIENT FILE

Phenylbenzimidazole Sulfonic Acid

INCI Phenylbenzimidazole Sulfonic Acid

UVB Filter Active Ingredients

What it is & what it does

Phenylbenzimidazole Sulfonic Acid (Ensulizole) is a water-soluble UVB filter.
It contributes to SPF without adding much oiliness, making it useful in lightweight sunscreens. It is not a broad-spectrum filter by itself.

Usage & cautions

Information approach Consumer-friendly summaries are informed by established cosmetic ingredient references such as INCIDecoder and Paula’s Choice Ingredient Dictionary, while avoiding turning ingredient-level evidence into medical claims about the finished product.