INCI name

CI 51319

CI 51319 (Pigment Violet 23)

Colorantreviewed

A synthetic violet pigment listed in Annex IV for rinse-off products and linked to an Annex II entry.

What it is

CI 51319, known as Pigment Violet 23, is a synthetic violet pigment that CosIng classes chemically as an oxazine colour; its structure is a dichlorinated triphenodioxazine. CosIng lists it as a colorant. In the EU it is listed in Annex IV (colorants), with an entry that restricts it to rinse-off products, and the EU data also link it to an entry in Annex II (prohibited substances).

Where it is used

Found in a small number of 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 conditions and for what the Annex II entry covers and how it applies.

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 858,18-Dichloro-5,15-diethyl-5,15-dihydrodiindolo[3,2-b:3',2'-m]triphenodioxazine
Maximum concentration
Rinse-off products
As of
3 November 2026 · (EC) 2009/1223
EU · Annex II, entry 13608,18-Dichloro-5,15-diethyl-5,15-dihydrodiindolo[3,2-b:3',2'-m]triphenodioxazine (Pigment Violet 23; CI 51319) when used as a substance in hair dye products
As of
3 November 2026 · (EC) 2013/344

Products with this ingredient (5)

Check a full ingredient list