Phenylbenzimidazole Sulfonic Acid

Barrier

INCI: Phenylbenzimidazole Sulfonic Acid

In short · TL;DR

Category

Base & Function

Effect

A water-soluble organic UV filter that absorbs UVB (commonly known as Ensulizole)

Concentration

Generally a few percent in sunscreen formulations (upper limits depend on each country's regulations; usually neutralized before use)

Effect

A water-soluble organic UV filter that absorbs UVB (commonly known as Ensulizole)

Mechanism

The sulfonic acid group confers water solubility, absorbing UVB in aqueous formulations

Typical concentration

Generally a few percent in sunscreen formulations (upper limits depend on each country's regulations; usually neutralized before use)

Onset

Functions immediately after application

Cautions

Feels light when formulated in the aqueous phase, but alone it does not cover UVA. Drug-like efficacy claims are not permitted

Evidence & references

https://pubchem.ncbi.nlm.nih.gov/compound/33919

This page is reference information and does not guarantee efficacy. Figures vary by test conditions (in vitro / manufacturer / concentration). It does not indicate pharmaceutical efficacy.

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