PLDEFRESITJęzyk: polski
INCI name

DISODIUM PHENYL DIBENZIMIDAZOLE TETRASULFONATE

Disodium phenyl dibenzimidazole tetrasulfonate (bisdisulizole disodium)

Light stabilizerUV absorberUV filterreviewed

A water-soluble UVA filter regulated in Annex VI.

What it is

Disodium phenyl dibenzimidazole tetrasulfonate, also known as bisdisulizole disodium, is the disodium salt of a phenylene-bis-benzimidazole tetrasulfonic acid that absorbs UVA radiation. CosIng lists it as a light stabiliser, UV absorber and UV filter. In the EU it is listed in Annex VI (UV filters).

Where it is used

Found in sunscreens, day creams with UV protection and other products containing UV filters.

Limits of interpretation

The INCI list shows which ingredients are present, not how much of each. Above 1%, ingredients are listed in descending order of weight; below 1% the order is free.

See the EU regulation section for the applicable limits; according to the Annex VI entry, the limit is expressed as the acid. The label does not show the concentration, and the protection of a product depends on the whole formula.

Functions

Light stabilizer
Protecting the cosmetic product from deterioration effects of light.
UV absorber
Protecting the cosmetic product from the effects of UV-light.
UV filter
Exclusively or mainly intended to protect the skin and/or hair against certain UV radiation by absorbing, reflecting or scattering UV radiation. All authorised UV filters are substances in the positive list of Annex VI to the Cosmetics Regulation 1223/2009.

EU regulation

EU · Annex VI, entry 24Sodium salt of 2,2'-bis(1,4-phenylene)-1H-benzimidazole-4,6-disulfonic acid / Bisdisulizole disodium (USAN)
Maximum concentration
10%(as acid)
As of
3 November 2026 · (EC) 2009/1223

Products with this ingredient (9)

Check a full ingredient list