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Phenylbenzimidazole Sulfonic Acid

Our database includes 349 products that contain Phenylbenzimidazole Sulfonic Acid.

You should know

What it is

Chemical UV Filter


This ingredient is more commonly known as Ensulizole, a chemical sunscreen ingredient.

Ensulizole mainly protects UV-B (290-340 nm) but offers a little UV-A (320-400 nm) protection. It is often paired with less photo-stable sunscreen ingredients due to its photo-stability.

Due to it being water-soluble, Ensulizole helps give sunscreens a light and non-oily texture.

Ensulizole is approved worldwide:

  • 4% in the US, Australia, New Zealand, and South Korea
  • 8% in the EU
  • 3% in Japan

Also known as: Ensulizole

Phenylbenzimidazole Sulfonic Acid is a rare cosmetic ingredient, with about 0.7% of the products in our database containing it.

What it does:

UV Absorber, UV Filter

Where it's used

Phenylbenzimidazole Sulfonic Acid is most often found as ingredient number 9 within an ingredient list.

Of the 18 products in our database that have a known concentration of Phenylbenzimidazole Sulfonic Acid, we've seen concentrations from 0.5% to 4% specified within their ingredient lists.

These are the categories of products that use Phenylbenzimidazole Sulfonic Acid the most:

CosIng Data

  • CosIng ID: 36535
  • INN Name: ensulizole
  • EC #:  248-502-0
  • All Functions: UV Absorber, UV Filter
What is CosIng?

CosIng is the European Commission database for information on cosmetic substances and ingredients.

SkinSort uses CosIng to source some of it's data on ingredient names and functions.