Cosmetic ingredient

ACID BLUE 1

ACID BLUE 1 is a cosmetic ingredient name. HAIR DYEING. CAS 129-17-9.

INCIAC0 products
CAS number
129-17-9
EC number
204-934-1
Chemical name
Hydrogen [4-[4-(diethylamino)-2',4'-disulphonatobenzhydrylidene]cyclohexa-2,5-dien-1-ylidene]diethylammonium, sodium salt (CI 42045)

What it is

ACID BLUE 1 is the INCI name used to identify this ingredient in cosmetic products. The technical record associates it with the chemical name “Hydrogen [4-[4-(diethylamino)-2',4'-disulphonatobenzhydrylidene]cyclohexa-2,5-dien-1-ylidene]diethylammonium, sodium salt (CI 42045)”.

What it does in a formula

In the available technical record, the assigned cosmetic functions are: hair dyeing.

Conditions and care

The available technical record includes conditions or restrictions of use: II/1355 (Acid Blue 1; CI 42045: when used as a substance in hair dye products). This information must be read in the context of the formulation and applicable regulation.

Chemical description

Acid Blue 1 is classed chemically as a triphenylmethane colour. It conforms to the formula:

Recorded conditions

Restrictions and conditions of use

Cosmetic restriction
II/1355 (Acid Blue 1; CI 42045: when used as a substance in hair dye products)
Catalogue presence

Products containing this ingredient

The list follows the composition declared by the source record and preserves the name found there.

No catalogue product was linked to this ingredient.