# US 2024/0197591 A1 · Compositions and methods for removing color from hair > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2024/0197591 A1 - Document ID: US20240197591A1 - Status: Published application - Kind: A1 - Application number: 18/084,403 - Filed: 2022-12-19 - Published: 2024-06-20 - Earliest claimed: 2022-12-19 - Assignees: L'oreal - Applicants: L'Oreal - Inventors: Matthew PROEFKE; Sarah SPEER; Tathagata MUKHERJEE; Shahid Mohammad NASEER; Sivaramakrishnan MUTHUKRISHNAN - Web page: https://patentgrep.com/patent/US20240197591A1 ## CPC - A61K 8/362: Polycarboxylic acids - A45D 19/0066: {Coloring or bleaching} - A61K 8/365: Hydroxycarboxylic acids; Ketocarboxylic acids - A61K 8/41: Amines - A61K 8/44: Aminocarboxylic acids or derivatives thereof, e.g. aminocarboxylic acids containing sulfur; Salts; Esters or N-acylated derivatives thereof - A61K 8/46: containing sulfur (A61K8/44 takes precedence) - A61Q 5/08: Preparations for bleaching the hair - 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) - A45D: HAIRDRESSING OR SHAVING EQUIPMENT (wigs, toupees or the like A41G3/00, A41G5/00; hairdressers' chairs A47C1/04; hair cutting appliances, razors B26B); EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING - A61Q: SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS ## Abstract The disclosure relates to compositions and methods for removing color from keratin fibers such as hair. The compositions comprise (a) at least one reducing agent chosen from glutaric acid, glyoxylic acid, thiolactic acid, thioglycolic acid, glycolic acid, or combinations of two or more thereof, (b) optionally, at least one amine compound, and (c) at least one solvent. ## Claims ### Claim 1 A hair-color removing composition comprising: (a) at least one reducing agent chosen from glutaric acid, glyoxylic acid, thiolactic acid, thioglycolic acid, glycolic acid, or combinations of two or more thereof; (b) optionally, at least one amine compound; and (c) at least one solvent. ### Claim 2 (depends on 1) The hair-color removing composition of claim 1, wherein the total amount of reducing agents (a) ranges from about 1% to about 20% by weight, relative to the total weight of the composition. ### Claim 3 (depends on 1) The hair-color removing composition of claim 1, wherein the reducing agent (a) comprises α-ketoglutaric acid, and optionally further comprises at least one additional reducing agent chosen from glutaric acid compounds other than α-ketoglutaric acid, glyoxylic acid, thiolactic acid, thioglycolic acid, and/or glycolic acid. ### Claim 4 (depends on 1) The hair-color removing composition of claim 1, wherein the total amount of reducing agents (a) ranges from about 3% to about 12% by weight, relative to the total weight of the composition. ### Claim 5 (depends on 1) The hair-color removing composition of claim 1, wherein the total amount of amine compounds (b) ranges from about 0.1% to about 20% by weight, relative to the total weight of the composition. ### Claim 6 (depends on 3) The hair-color removing composition of claim 3, comprising monoethanolamine in an amount ranging from about 1% to about 10% by weight, relative to the total weight of the composition. ### Claim 7 (depends on 1) The hair-color removing composition of claim 1, further comprising at least one component chosen from thickening agents, fatty compounds, clay compounds, carboxylic acids, amino acids, anionic surfactants, non-ionic surfactants, amphoteric/zwitterionic surfactants, or combinations thereof. ### Claim 8 (depends on 1) The hair-color removing composition of claim 1, wherein the composition is free of reducing agents other than glutaric acid, glyoxylic acid, thiolactic acid, thioglycolic acid, and/or glycolic acid. ### Claim 9 A hair-color removing composition comprising: a) at least one reducing agent chosen from glutaric acid, glyoxylic acid, thiolactic acid, thioglycolic acid, glycolic acid, or combinations of two or more thereof; b) monoethanolamine; and c) water, wherein the pH of the composition ranges from about 1 to about 6. ### Claim 10 (depends on 9) The hair-color removing composition of claim 9, wherein the total amount of reducing agents (a) ranges from about 1% to about 20% by weight, relative to the total weight of the composition. ### Claim 11 (depends on 9) The hair-color removing composition of claim 9, wherein the reducing agent (a) comprises α-ketoglutaric acid, and optionally further comprises at least one additional reducing agent chosen from glutaric acid compounds other than α-ketoglutaric acid, glyoxylic acid, thiolactic acid, thioglycolic acid, and/or glycolic acid. ### Claim 12 (depends on 9) The hair-color removing composition of claim 9, wherein the total amount of monoethanolamine ranges from about 1% to about 15% by weight, relative to the total weight of the composition. ### Claim 13 (depends on 9) The hair-color removing composition of claim 9, further comprising at least one component chosen from thickening agents, fatty compounds, clay compounds, carboxylic acids, amino acids, anionic surfactants, non-ionic surfactants, amphoteric/zwitterionic surfactants, or combinations thereof. ### Claim 14 (depends on 9) The hair-color removing composition of claim 9, wherein the composition is free of reducing agents other than glutaric acid, glyoxylic acid, thiolactic acid, thioglycolic acid, and/or glycolic acid. ### Claim 15 A method for removing color from hair, the method comprising: i. applying to the hair a hair-color removing composition comprising: a. at least one reducing agent chosen from glutaric acid, glyoxylic acid, thiolactic acid, thioglycolic acid, glycolic acid, or combinations of two or more thereof; b. optionally, at least one amine compound; and c. at least one solvent, and ii. rinsing the hair. ### Claim 16 (depends on 15) The method according to claim 15, wherein the hair-color removing composition comprises a total amount of reducing agents (a) ranging from about 1% to about 20% by weight, relative to the total weight of the composition. ### Claim 17 (depends on 15) The method according to claim 15, wherein the hair-color removing composition comprises a total amount of amine compounds (b) ranging from about 0.1% to about 20% by weight, relative to the total weight of the composition. ### Claim 18 (depends on 15) The method according to claim 15, wherein the hair-color removing composition comprises monoethanolamine in an amount ranging from about 1% to about 15% by weight, relative to the total weight of the composition. ### Claim 19 (depends on 15) The methods according to claim 15, wherein the hair-color removing composition has a pH ranging from about 1 to about 6. ### Claim 20 (depends on 15) The method according to claim 15, wherein the hair to which the hair-color removing composition is applied comprises at least one oxidative dye.