Hair dyeing composition comprising an oxidation dye, a scleroglucan gum and an alkaline agent such as an amino acid

A composition for dyeing keratin fibers, comprising:

• at least one oxidation dye;
• at least one scleroglucan gum present in a total amount of greater than or equal to 0.5% by weight, relative to the total weight of the composition;
• and
• at least one alkaline agent chosen from amino acids, wherein the at least one alkaline agent chosen from amino acids is present in a total amount of greater than or equal to 1% by weight, relative to the weight of the composition.

A method for dyeing keratin fibers comprising:

• applying to the keratin fibers a dye composition (A) and an oxidizing composition (B);
• wherein the dye composition (A) comprises:
• at least one oxidation dye;
• at least one scleroglucan gum present in a total amount of greater than or equal to 0.5% by weight, relative to the total weight of the dye composition (A);
• and
• at least one alkaline agent chosen from amino acids, wherein the at least one alkaline agent chosen from amino acids is present in a total amount of greater than or equal to 1% by weight, relative to the weight of the dye composition (A);
• wherein the oxidizing composition (B) comprises at least one chemical oxidizing agent;
• and
• wherein the oxidizing composition (B) is extemporaneously mixed with the dye composition (A) just before being applied to the keratin fibers, or alternatively, the dye composition (A) and the oxidizing composition (B) are applied sequentially to the keratin fibers without intermediate rinsing.