INCI name

CI 15510

CI 15510 (Orange II)

An orange azo colorant regulated in Annex IV.

What it is

CI 15510 is the Colour Index number of an orange colorant of the monoazo class (sodium 4-[(2-hydroxy-1-naphthyl)azo]benzenesulphonate). CosIng lists it as a colorant. In the EU it is listed in Annex IV (colorants); according to that entry it must not be used in eye products.

Where it is used

Found in shampoos, shower gels, soaps, bath products and other coloured products.

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 and conditions. The label does not show the amount of colorant used.

Functions

Colorant: Exclusively or mainly intended to colour the cosmetic product, the body as a whole or certain parts thereof, by absorption or reflection of visible light; (precursors of oxidative hair colorants shall be deemed colorants). All authorised colorants are substances in the positive list of Annex IV to the Cosmetics Regulation 1223/2009.

EU regulation

EU · Annex IV, entry 21Sodium 4-[(2-hydroxy-1-naphthyl)azo]benzenesulphonate and its unsoluble barium, strontium and zirconium lakes, salts and pigments

Maximum concentration: Not to be used in eye products
As of: 3 November 2026 · (EC) 2009/1223

Products with this ingredient (51)

Check a full ingredient list