# US 2014/0196741 A1 · Process for treating straightened keratin fibres > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2014/0196741 A1 - Document ID: US20140196741A1 - Status: Published application - Kind: A1 - Application number: 14/122,719 - Filed: 2012-06-01 - Published: 2014-07-17 - Earliest claimed: 2011-06-01 - Assignees: L'oreal - Inventors: Julien Cabourg; Gregory Plos; Laetitia Feuillette - Web page: https://patentgrep.com/patent/US20140196741A1 ## CPC - A61K 8/365: Hydroxycarboxylic acids; Ketocarboxylic acids - A45D 7/06: combined chemical and thermal - A61K 8/362: Polycarboxylic acids - A61Q 5/00: Preparations for care of the hair - A61Q 5/04: Preparations for permanent waving or straightening 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 present invention relates to a process for treating straightened keratin fibres, in which a composition comprising at least one carboxylic acid in its acid or salified form, the pH being greater than 8, is applied to the straightened keratin fibres. ## Claims ### Claim at position 1 1-12. (canceled) ### Claim 13 A process for treating straightened keratin fibers, said process comprising a step of: applying to the straightened keratin fibers a composition comprising at least one carboxylic acid in its acid or salified form, wherein the pH of the composition is greater than about 8. ### Claim 14 (depends on 13) The process according to claim 13, wherein the composition comprises at least one carboxylic acid chosen from tricarboxylic acids or salts thereof, dicarboxylic acids or salts thereof, amino dicarboxylic acids or salts thereof, monocarboxylic acids or salts thereof, α-hydroxylated carboxylic acids or salts thereof, and dihydroxylated carboxylic acids or salts thereof. ### Claim 15 (depends on 13) The process according to claim 13, wherein the composition comprises at least one carboxylic acid or one carboxylic acid salt chosen from citric acid, sodium citrate, maleic acid, sodium maleate, succinic acid, sodium succinate, aspartic acid, sodium aspartate, glutamic acid, sodium glutamate, lactic acid, sodium lactate, malic acid, sodium malate, tartaric acid and sodium tartrate. ### Claim 16 (depends on 13) The process according to claim 13, wherein the carboxylic acid is chosen from citric acid and salts thereof. ### Claim 17 (depends on 13) The process according to claim 13, wherein the composition comprises carboxylic acid in acid or salified form in an amount ranging from about 1% to about 50%. ### Claim 18 (depends on 13) The process according to claim 13, wherein the composition comprises carboxylic acid in acid or salified form in an amount ranging from about 1% to about 10%. ### Claim 19 (depends on 13) The process according to claim 13, wherein the composition comprises carboxylic acid in acid or salified form in an amount ranging from about 2% to about 5%. ### Claim 20 (depends on 13) The process according to claim 13, wherein the composition further comprises at least one basifying agent. ### Claim 21 (depends on 20) The process according to claim 20, wherein the basifying agent is chosen from aqueous ammonia; alkaline carbonates; alkanolamines, such as mono, di- and triethanolamines and derivatives thereof; sodium hydroxide; potassium hydroxide; compounds of the following formula: wherein W is a propylene residue optionally substituted with a hydroxyl group or a C1-C4 alkyl radical; Ra, Rb, Rc and Rd, which may be identical or different, represent a hydrogen atom or a C1-C4 alkyl or C1-C4 hydroxyalkyl radical; and mixtures thereof. ### Claim 22 (depends on 13) The process according to claim 13, wherein the composition has a pH ranging from about 8.01 to about 13. ### Claim 23 (depends on 13) The process according to claim 13, wherein the composition has a pH ranging from about 8.01 to about 10. ### Claim 24 (depends on 13) The process according to claim 13, wherein the composition has a pH ranging from about 8.01 to about 9. ### Claim 25 (depends on 13) The process according to claim 13, wherein the composition has a pH ranging from about 8.1 to about 9. ### Claim 26 (depends on 13) The process according to claim 13, further comprising leaving the composition on the keratin fibers for a period of time ranging from about 5 minutes to about 2 hours. ### Claim 27 (depends on 13) The process according to claim 13, further comprising leaving the composition on the keratin fibers for a period of time ranging from about 5 to about 30 minutes. ### Claim 28 (depends on 13) The process according to claim 13, further comprising leaving the composition on the keratin fibers for a period of time ranging from about 10 to about 30 minutes. ### Claim 29 (depends on 13) The process according to claim 13, wherein the keratin fibers have been straightened beforehand by applying a composition comprising an alkaline hydroxide. ### Claim 30 (depends on 13) The process according to claim 13, wherein the composition is applied to wet hair. ### Claim 31 (depends on 13) The process according to claim 13, further comprising smoothing the hair with a smoothing iron.