Composition comprising a specific oxidation dye precursor and two specific acids

A composition comprising:

• at least one oxidation base chosen from 2-methoxymethyl-para-phenylenediamine of formula (I), addition salts thereof, solvates thereof, solvates of salts thereof, or mixtures of two or more thereof:
• at least one oxidation coupler,
• at least one compound chosen from etidronic acid, salts thereof, or mixtures of two or more thereof, and
• at least one compound chosen from 2,6-dipicolinic acid, salts thereof, or mixtures of two or more thereof.

A method for dyeing keratin fibers, comprising applying to the keratin fibers, a mixture comprising a dyeing composition and an oxidizing composition,

• wherein the dyeing composition comprises:
• at least one oxidation base chosen from 2-methoxymethyl-para-phenylenediamine of formula (I), addition salts thereof, solvates thereof, solvates of salts thereof, or mixtures of two or more thereof:
• at least one oxidation coupler, and
• optionally at least one alkaline agent;
• wherein the oxidizing composition comprises at least one chemical oxidizing agent,
• wherein at least one of the dyeing composition or the oxidizing composition comprises:
• at least one compound chosen from etidronic acid, salts thereof, or mixtures of two or more thereof;
• at least one compound chosen from 2,6-dipicolinic acid, salts thereof, or mixtures of two or more thereof;
• and
• optionally at least one compound chosen from liquid fatty substances, solid fatty substances, at least one surfactant, or mixtures of two or more thereof.

A device for dyeing keratin fibers comprising:

• at least one first compartment comprising a dyeing composition, and
• at least one second compartment comprising an oxidizing composition,
• wherein the dyeing composition comprises:
• at least one oxidation base chosen from 2-methoxymethyl-para-phenylenediamine of formula (I), addition salts thereof, solvates thereof, solvates of salts thereof, or mixtures of two or more thereof:
• at least one oxidation coupler, and
• optionally at least one alkaline agent,
• wherein the oxidizing composition comprises at least one chemical oxidizing agent.
• wherein at least one of the dyeing composition or the oxidizing composition comprises:
• at least one compound chosen from etidronic acid, salts thereof, or mixtures of two or more thereof;
• at least one compound chosen from 2,6-dipicolinic acid, salts thereof, or mixtures of two or more thereof;
• and
• optionally at least one compound chosen from liquid fatty substances, solid fatty substances, at least one surfactant, or mixtures of two or more thereof.