# US 9,005,594 B2 · Method for lightening human keratin fibers using at least one anhydrous composition, at least one organic amine, and at least one oxidizing agent, and device for use thereof > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 9,005,594 B2 - Document ID: US9005594B2 - Status: Granted - Kind: B2 - Application number: 12/339,781 - Filed: 2008-12-19 - Published: 2009-06-25 - Granted: 2015-04-14 - Earliest claimed: 2008-01-16 - Assignees: L'oreal - Applicants: Leïla Hercouet; Alain Lagrange - Inventors: Leïla Hercouet; Alain Lagrange - Web page: https://patentgrep.com/patent/US9005594B2 ## CPC - 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 - A61Q 5/08: Preparations for bleaching the hair - A61K 2800/31: Anhydrous - A61K 2800/88: Two- or multipart kits - 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 A novel process for lightening human keratin fibers comprising applying to the fibers at least one anhydrous composition (A) comprising at least one fatty substance and at least one surfactant, at least one composition (B) comprising at least one organic amine having a pKb less than 12, and at least one composition (C) comprising at least one oxidizing agent and leaving the compositions on the fibers for a period of time sufficient to lighten the fibers; and a multi-compartment device or kit, wherein at least one first compartment comprises the at least one anhydrous composition (A), at least one second compartment comprises the at least one composition (B), and at least one third compartment comprises the at least one composition (C). ## Claims ### Claim 1 A process for lightening human keratin fibers, comprising: (a) applying to the fibers a mixture formed by extemporaneously mixing, at the time of use: at least one anhydrous composition (A) comprising at least one fatty substance and at least one surfactant, wherein the at least one fatty substance is liquid at a temperature of 25° C. and at atmospheric pressure, and wherein the at least one fatty substance is present in an amount ranging from 10% to 99% by weight, relative to the weight of the anhydrous composition (A); at least one composition (B) comprising at least one organic amine having a pKb less than 12; and at least one composition (C) comprising at least one oxidizing agent; and (b) leaving the mixture on the fibers for a period of time sufficient to lighten the fibers. ### Claim 2 (depends on 1) The process according to claim 1, wherein the at least one fatty substance is chosen from alkanes, fatty alcohols, fatty acids, fatty acid esters, fatty alcohol esters, mineral oils, plant oils, animal oils, synthetic oils, silicones, and waxes. ### Claim 3 (depends on 1) The process according to claim 1, wherein the at least one fatty substance is chosen from liquid petroleum jelly, polydecenes, and liquid esters. ### Claim 4 (depends on 1) The process according to claim 1, wherein the at least one surfactant is a nonionic surfactant chosen from monooxyalkeylenated, polyoxyalkylenated, monoglycerolated, and polyglycerolated nonionic surfactants. ### Claim 5 (depends on 1) The process according to claim 1, wherein the at least one surfactant is present in an amount ranging from 0.1% to 50% by weight relative to the weight of the anhydrous composition (A). ### Claim 6 (depends on 1) The process according to claim 1, wherein the at least one organic amine is at least partially miscible in the at least one fatty substance. ### Claim 7 (depends on 1) The process according to claim 1, wherein the at least one organic amine comprises one or two functional groups chosen from primary, secondary, and tertiary amine functional groups, and at least one group chosen from linear and branched C1-C8 alkyl group bearing at least one hydroxyl radical. ### Claim 8 (depends on 1) The process according to claim 1, wherein the at least one organic amine is chosen from: an alkanolamine chosen from mono-, di-, and trialkanolamines, comprising from one to three identical or different C1-C4 hydroxyalkyl radicals and a compound of formula: wherein W is chosen from C1-C6 alkylene residues optionally substituted with a hydroxyl group; Rx, Ry, Rz, and Rt which may be identical or different, are chosen from a hydrogen atom, C1-C6 alkyl, C1-C6 hydroxyalkyl, and C1-C6 aminoalkyl radicals. ### Claim 9 (depends on 7) The process according to claim 7, wherein the at least one organic amine is an alkanolamine. ### Claim 10 (depends on 7) The process according to claim 7, wherein the at least one organic amine is chosen form 2-amino-2-methyl-1-propanol and monoethanolamine. ### Claim 11 (depends on 1) The process according to claim 1, wherein the at least one organic amine is chosen from the amino acids of formula (I): wherein R is a group chosen from: ### Claim 12 (depends on 11) The process according to claim 11, wherein the at least one organic amine is chosen from arginine, histidine, and lysine. ### Claim 13 (depends on 1) The process according to claim 1, wherein the at least one organic amine is present in an amount ranging from 0.1% to 40% by weight relative to the weight of composition (B). ### Claim 14 (depends on 13) The process according to claim 13, wherein the at least one organic amine is present in an amount ranging from 0.5% to 20% by weight relative to the weight of composition (B). ### Claim 15 (depends on 1) The process according to claim 1, wherein the value of the weight ratio R1 of the amounts of compositions ((A)+(B))/(C), and the value of the weight ratio R2 of the amounts of compositions (A)/(B), range from 0.1 to 10. ### Claim 16 A process for lightening human keratin fibers, comprising: (a) applying to the fibers: at least one anhydrous composition (A) comprising at least one fatty substance and at least one surfactant, wherein the at least one fatty substance is liquid at a temperature of 25° C. and at atmospheric pressure, and wherein the at least one fatty substance is present in an amount ranging from 10% to 99% by weight, relative to the weight of the anhydrous composition (A); at least one composition (B) comprising at least one organic amine having a pKb less than 12; and at least one composition (C) comprising at least one oxidizing agent; wherein: compositions (A), (B), and (C) are applied to the fibers successively and without intermediate rinsing, or compositions (B), (A), and (C) are applied to the fibers successively and without intermediate rinsing, or composition (C) and a mixture resulting from mixing compositions (A) and (B) are applied to the fibers successively and without intermediate rinsing; and (b) leaving the compositions on the fibers for a period of time sufficient to lighten the fibers.