# US 11,077,041 B2 · Agents for reductive decolourisation of dyed keratinous fibres

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- Number: US 11,077,041 B2
- Document ID: US11077041B2
- Status: Granted
- Kind: B2
- Application number: 16/688,165
- Filed: 2019-11-19
- Published: 2020-06-18
- Granted: 2021-08-03
- Earliest claimed: 2018-12-13
- Assignees: Henkel AG & Co. KGaA
- Applicants: Henkel AG & Co. KGaA
- Inventors: Juergen Schoepgens; Torsten Lechner
- Web page: https://patentgrep.com/patent/US11077041B2

## CPC

- A61K 8/46: containing sulfur (A61K8/44 takes precedence)
- A61Q 5/08: Preparations for bleaching the hair
- A61K 8/19: containing inorganic ingredients
- A61K 8/22: Peroxides; Oxygen; Ozone
- A61K 8/31: Hydrocarbons
- A61K 8/375: {the alcohol moiety containing more than one hydroxy group}
- A61K 8/41: Amines
- A61Q 5/10: Preparations for permanently dyeing the hair
- A61K 2800/4324: in preparations for permanently dyeing the hair
- A61K 2800/882: Mixing prior to application
- A61K: PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES (devices or methods specially adapted for bringing pharmaceutical products into particular physical or administering forms A61J3/00; chemical aspects of, or use of materials for deodorisation of air, for disinfection or sterilisation, or for bandages, dressings, absorbent pads or surgical articles A61L; soap compositions C11D)
- A61Q: SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS

## Abstract

The present disclosure relates to multi-component packaging units (kits-of-parts), ready-to-use agents, and methods for reductive decolourisation of dyed keratinous fibres. In one example, the multi-component packaging unit (kit-of-parts) for reductive decolourisation of dyed keratinous fibres includes, (I) a first container (A) including a cosmetic agent (a) and (II) a second container (B) including a cosmetic agent (b), wherein the first container (A) and the second container (B) are provided separately from one another, the cosmetic agent (a) in the first container (A) includes (a1) one or more reducing agent(s) that is/are solid at room temperature, and (a2) one or more oxidant(s) that is/are solid at room temperature, and wherein the cosmetic agent (b) in the second container (B) comprises (b1) one or more alkalising agent(s).

## Claims

### Claim 1

A ready-to-use agent for reductive decolourisation of dyed hair comprising,
a cosmetic agent (a) consisting of formamidine sulfinic acid, ceteareth-12, ceteareth-20, xanthan, cetearyl alcohol, sodium cetearyl sulfate, hydrogenated castor oil, sodium percarbonate, and liquid paraffin, and
a cosmetic agent (b) consisting of cetearyl alcohol, monoethanol amine, PEG-40 hydrogenated castor oil, sodium laureth sulfate, and water.

### Claim 2 (depends on 1)

A method for reductive decolourisation of dyed hair, comprising the following steps in the stated order,
(I) producing a ready-to-use decolourising agent by mixing a cosmetic agent (a) with a cosmetic agent (b), wherein the cosmetic agents (a) and (b) are according to claim 1,
(II) applying the ready-to-use decolourising agent to the dyed hair,
(III) leaving the ready-to-use decolourising agent on the dyed hair to take effect, and
(IV) rinsing out the ready-to-use decolourising agent from the hair.

### Claim 3 (depends on 2)

The method according to claim 2, wherein the cosmetic agents (b) and (a) are mixed with one another in a ratio (b)/(a) of from about 10.0 to about 1.0.