# US 10,863,811 B2 · Process for treating keratin fibres with input of heat > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,863,811 B2 - Document ID: US10863811B2 - Status: Granted - Kind: B2 - Application number: 14/128,097 - Filed: 2012-06-25 - Published: 2014-08-21 - Granted: 2020-12-15 - Earliest claimed: 2011-06-23 - Assignees: L'oreal - Applicants: Eric Parris; Gabin Vic - Inventors: Eric Parris; Gabin Vic - Web page: https://patentgrep.com/patent/US10863811B2 ## CPC - A45D 7/06: combined chemical and thermal - A45D 1/04: by electricity - A45D 19/012: {Devices for colouring or bleaching separated strands of hair, e.g. highlighting (A45D19/02 and A45D19/18 take precedence)} - A45D 19/16: Surface treatment of hair by steam, oil, or the like - A61K 8/31: Hydrocarbons - A61K 8/342: {Alcohols having more than seven atoms in an unbroken chain} - A61K 8/37: Esters of carboxylic acids - A61K 8/416: {Quaternary ammonium compounds (A61K8/35 takes precedence)} - A61K 8/891: saturated, e.g. dimethicone, phenyl trimethicone, C24-C28 methicone or stearyl dimethicone - A61K 8/898: containing nitrogen, e.g. amodimethicone, trimethyl silyl amodimethicone or dimethicone propyl PG-betaine - A61Q 5/065: {Preparations for temporary colouring the hair, e.g. direct dyes} - A61Q 5/10: Preparations for permanently dyeing the hair - A61Q 5/12: Preparations containing hair conditioners - A45D 19/0066: {Coloring or bleaching} - A61K 2800/88: Two- or multipart kits - 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 - 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 process for treating keratin fibres may include applying a hair treatment composition to the keratin fibres. The composition may comprise at least one of fatty substances, surfactants, polymers with a glass transition temperature (Tg) ranging from about 40° C. to about 150° C., oxidation dye precursors, and direct dyes. The process may also include inserting the keratin fibres into a device comprising two elements that are moveable relative to each other between an open position and a closed position. In the closed position, the two elements may define a substantially leaktight closed space. The process may further include moving the two elements into the closed position to confine the keratin fibres in the closed space, and heating the keratin fibres to a temperature ranging from about 40° C. to about 250° C. while the keratin fibres are confined in the closed space. ## Claims ### Claim 1 A process for treating keratin fibres, the process comprising: applying a hair treatment composition to the keratin fibres, the hair treatment composition comprising at least one of fatty substances, surfactants, polymers with a glass transition temperature (Tg) ranging from about 40° C. to about 150° C., oxidation dye precursors, or direct dyes; inserting the treated keratin fibres into a device comprising two rigid elements that are moveable relative to each other between an open position and a closed position, wherein, in the closed position, the two rigid elements define a flat chamber comprising a substantially leaktight closed space; moving the two rigid elements into the closed position to confine the keratin fibres in the closed space of the flat chamber; and heating the treated keratin fibres to a temperature ranging from about 40° C. to about 250° C. while the keratin fibres are confined in the closed space of the flat chamber, wherein at least one of the two rigid elements comprises a heat source that generates heat. ### Claim 2 (depends on 1) The process of claim 1, wherein the fatty substances include at least one of fatty alcohols, fatty acids, non-silicone waxes of natural or synthetic origin, and silicone gums. ### Claim 3 (depends on 1) The process of claim 1, wherein the composition comprises at least one compound having a softening point or a melting point ranging from about 40° C. to about 150° C. ### Claim 4 (depends on 1) The process of claim 1, wherein heating the keratin fibres comprises heating the keratin fibres for an amount of time ranging from about 1 second to about 60 minutes. ### Claim 5 (depends on 1) The process of claim 1, wherein heating the keratin fibres comprises heating the keratin fibres for an amount of time ranging from about 5 seconds to about 60 seconds. ### Claim 6 (depends on 1) The process of claim 1, wherein heating the keratin fibres comprises heating the keratin fibres for an amount of time ranging from about 5 seconds to about 20 seconds. ### Claim 7 (depends on 1) The process of claim 1, wherein inserting the keratin fibres into the device comprises inserting loose keratin fibres not wound onto a curler into the device. ### Claim 8 (depends on 1) The process of claim 1, wherein portions of the keratin fibres that are within the closed space are not under mechanical tension. ### Claim 9 (depends on 1) The process of claim 1, further comprising introducing a heat-exchange liquid into the flat chamber defined by the two rigid elements receiving the keratin fibres. ### Claim 10 (depends on 9) The process of claim 9, wherein the heat-exchange liquid comprises water. ### Claim 11 (depends on 1) The process of claim 1, further comprising smoothing the keratin fibres. ### Claim 12 (depends on 1) The process of claim 1, wherein inserting the treated keratin fibres into the device comprises inserting partially dry keratin fibres into the device. ### Claim 13 (depends on 1) The process of claim 1, further comprising rinsing the keratin fibres after heating the keratin fibres. ### Claim 14 (depends on 1) The process of claim 1, wherein each of the two rigid elements comprises a heat source. ### Claim 15 (depends on 1) The process of claim 1, wherein the heat source is chosen from a thermal resistance, a source of infrared radiation, a source of microwave radiation, a laser, or a source of intense pulse light. ### Claim 16 (depends on 1) The process of claim 1, wherein the device comprises at least one seal at least partly delimiting the closed space. ### Claim 17 (depends on 1) The process of claim 1, wherein the device is configured with a seal at least partly delimiting the flat chamber on each of the two rigid elements, wherein the seals are applied against each other in the closed position of the rigid elements. ### Claim 18 (depends on 1) The process of claim 1, wherein the two rigid elements are articulatable relative to each other. ### Claim 19 (depends on 1) The process of claim 1, wherein applying the hair treatment composition to the keratin fibres comprises applying the hair treatment composition to human keratin fibres. ### Claim 20 (depends on 19) The process of claim 19, wherein applying the hair treatment composition to the human keratin fibres comprises applying the hair treatment composition to human hair.