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Compositions for altering the color of hair

  • US 10,231,915 B2
  • Filed: 04/11/2017
  • Issued: 03/19/2019
  • Est. Priority Date: 05/01/2015
  • Status: Active Grant
First Claim
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1. A method for altering the color of the hair, comprising applying to the hair:

  • (a) a hair treatment composition comprising;

    monoethanolamine;

    at least one compound chosen from malonic acid and salts thereof; and

    at least one solvent chosen from water, cosmetically acceptable organic solvents, and combinations thereof,wherein the monoethanolamine is present in an amount ranging from about 3% to about 8% by weight, based on the weight of the hair treatment composition;

    wherein the at least one compound chosen from malonic acid and salts thereof is present in an amount ranging from about 6% to about 18% by weight, based on the weight of the hair treatment composition; and

    wherein the pH of the hair treatment composition ranges from about 2 to about 6; and

    (b) a color-altering composition comprising at least one oxidizing agent, at least one colorant compound, or combinations thereof;

    wherein the hair treatment composition and the color-altering composition are free of oxidative dye precursors.

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