Improving the fastness to washing of pigment-containing dyes by using an oxidative pretreatment agent
AssigneeHenkel AG & Co. KGaA
InventorsConstanze Kruck, Sandra Hilbig, Melanie Moch, Daniela Kessler-Becker
Life of this patent
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Abstract
A process and a kit-of-parts for dyeing keratinous material, in particular human hair, are provided. An exemplary process includes applying a pre-treatment agent (V) to the keratinous material, wherein the pre-treatment agent in a cosmetic carrier includes at least one oxidizing agent (V-1), and applying a colorant (F) to the keratinous material, the colorant being in a cosmetic carrier and including (F-1) at least one amino-functionalized silicone polymer and (F-2) at least one pigment.
Claims20
A process for dyeing keratinous material comprising:
- applying a pre-treatment agent (V) to the keratinous material, wherein the pre-treatment agent in a cosmetic carrier comprises at least one oxidizing agent (V-1),
- after applying the pre-treatment agent (V) to the keratinous material, exposing the pretreatment agent to the keratinous fibers for a period of 2 to 45 minutes;
- rinsing out the pretreatment agent with water;
- after rinsing out the pretreatment, applying a colorant (F) to the keratinous material, the colorant being in a cosmetic carrier and comprising (F-1) at least one amino-functionalized silicone polymer and (F-2) at least one pigment;
- exposing the colorant to the keratinous fibers for a period of from 15 seconds to 45 minutes, and
- rinsing out the colorant with water.
A process for dyeing human hair comprising:
- applying a pre-treatment agent (V) in a first cosmetic carrier to the human hair, wherein the pre-treatment agent comprises at least one oxidizing agent (V-1), and
- applying a colorant (F) in a second cosmetic carrier to the human hair, wherein the colorant comprises at least one amino-functionalized silicone polymer (F-1) and at least one pigment (F-2), wherein the at least one oxidizing agent (V-1) is selected from the group consisting of hydrogen peroxide, ammonium peroxodisulfate, potassium peroxodisulfate and sodium peroxodisulfate.
A process for dyeing keratinous material comprising:
- applying a pre-treatment agent (V) to the keratinous material, wherein the pre-treatment agent in a cosmetic carrier comprises at least one oxidizing agent (V-1), and wherein the pretreatment agent (V)—based on the total weight of the pretreatment agent—comprises 3.0 to 6.0 wt. % of (V-1) hydrogen peroxide;
- rinsing out the pretreatment agent (V) with water and
- applying a colorant (F) to the keratinous material, the colorant being in a cosmetic carrier and comprising (F-1) at least one amino-functionalized silicone polymer and (F-2) at least one pigment.
Dependencies are inferred from the claim text.