Composition for lightening keratin fibres and process for lightening keratin fibres using said composition

A composition comprising:

• i) at least one chemical oxidizing agent chosen from hydrogen peroxide, a hydrogen peroxide-generating system other than peroxygenated salts, or mixtures thereof;
• ii) at least one compound chosen from a carbonate, a carbonate-generating system, a bicarbonate, a bicarbonate-generating system, or mixtures thereof;
• iii) at least one silicate;
• iv) at least one amphoteric or zwitterionic compound chosen from:
• a phospholipid, an amino acid, an amphoteric or zwitterionic surfactant, or mixtures thereof;
• v) at least one compound different from the compound iv), wherein the at least one compound v) is chosen from:
• a) an alcohol;
• b) an organic acid;
• c) an ester, an amide, an imine, or mixtures thereof;
• d) an organic amine;
• e) at least one compound comprising a saturated or unsaturated, linear or branched hydrocarbon-based chain comprising from 1 to 30 carbon atoms;
• or mixtures thereof;
• wherein the composition comprises a total amount of persulfates of less than 10% by weight.

A method for simultaneously bleaching and dyeing keratin fibers, comprising:

• (1) mixing a composition (A) with a composition (B), and optionally with a composition (C):
• wherein composition (A) comprises:
• at least one chemical oxidizing agent i) chosen from hydrogen peroxide, a hydrogen peroxide-generating system other than peroxygenated salts, or a mixture thereof;
• and
• optionally at least one amphoteric or zwitterionic compound iv) and/or at least one compounds v);
• and
• wherein composition (B) comprises:
• at least one compound ii) chosen from a carbonate, a carbonate-generating system, a bicarbonate, a bicarbonate-generating system, or a mixture thereof;
• and
• at least one silicate iii);
• optionally at least one colouring agent vi);
• and
• optionally at least one amphoteric or zwitterionic compound iv) and/or at least one compound v);
• and
• wherein composition (C) comprises:
• at least one colouring agent vi);
• and
• optionally at least one amphoteric or zwitterionic compound iv) and/or at least one compound v);
• wherein at least one of composition (A), composition (B), or composition (C) comprises the at least one amphoteric or zwitterionic compounds iv) and the at least one compound v);
• and
• (2) applying the mixture to the keratin fibers.

A multi-compartment device comprising:

• a first compartment comprising a composition (A), wherein composition (A) comprises:
• at least one chemical oxidizing agent i) chosen from hydrogen peroxide, a hydrogen peroxide-generating system other than peroxygenated salts, or a mixture thereof;
• and
• optionally at least one amphoteric or zwitterionic compound iv) and/or at least one compounds v);
• and
• a second compartment comprising a composition (B), wherein composition (B) comprises:
• at least one compound ii) chosen from a carbonate, a carbonate-generating system, a bicarbonate, a bicarbonate-generating system, or a mixture thereof;
• and
• at least one silicate iii);
• optionally at least one colouring agent vi);
• and
• optionally at least one amphoteric or zwitterionic compound iv) and/or at least one compound v);
• and
• optionally a third compartment comprising a composition (C), wherein composition (C) comprises:
• at least one colouring agent;
• and
• optionally at least one amphoteric or zwitterionic compound iv) and/or at least one compound v);
• wherein at least one of composition (A), composition (B), or composition (C) comprises the at least one amphoteric or zwitterionic compounds iv).