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Is Phenylbenzimidazole Sulfonic Acid vegan?

Phenylbenzimidazole Sulfonic Acid

Vegan Vegan
Vegetarian Vegetarian

Phenylbenzimidazole Sulfonic Acid, also known as ensulizole (INN) or PBSA, is a synthetic aromatic sulfonic acid compound widely used as a UV filter in sunscreens to absorb UVB radiation.

Also known as 2-Phenyl-1H-benzimidazole-5-sulphonic acid
INCI name Phenylbenzimidazole Sulfonic Acid
EC number 248-502-0
CosIng ID 36535
Last reviewed 9 July 2026

An ingredient is considered vegan if it contains no animal-derived components at any point in its production.

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