# US 11,026,874 B2 · Systems and methods for changing the color of hair > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,026,874 B2 - Document ID: US11026874B2 - Status: Granted - Kind: B2 - Application number: 16/528,140 - Filed: 2019-07-31 - Published: 2021-02-04 - Granted: 2021-06-08 - Earliest claimed: 2019-07-31 - Assignees: L'oreal - Applicants: L'oreal - Inventors: Stephanie Midori Laga; Shilpa Joshi; Anand Ramchandra Mahadeshwar - Web page: https://patentgrep.com/patent/US11026874B2 ## CPC - A61K 8/498: {having 6-membered rings or their condensed derivatives, e.g. coumarin} - A61K 8/19: containing inorganic ingredients - A61K 8/24: Phosphorous; Compounds thereof - A61K 8/365: Hydroxycarboxylic acids; Ketocarboxylic acids - A61K 8/37: Esters of carboxylic acids - A61K 8/602: {Glycosides, e.g. rutin} - A61K 8/9789: Magnoliopsida [dicotyledons] - A61Q 5/065: {Preparations for temporary colouring the hair, e.g. direct dyes} - A61Q 5/10: Preparations for permanently dyeing the hair - A61K 2800/43: Pigments; Dyes - A61K 2800/884: Sequential 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 systems, compositions, methods, and kits for coloring hair. The systems comprise at least two compositions: (i) a first composition comprising at least one pigment, and (ii) a second color changing composition comprising at least one color changing agent. The methods comprise changing the color of the hair by applying the first composition (i) onto the hair to change the hair from an initial hair color to a first hair color, and subsequently applying the second composition (ii) onto the hair to change the color of the hair from the first hair color to a second hair color. ## Claims ### Claim 1 A system for changing the color of the hair, comprising: (i) a first composition comprising at least one pigment, and (ii) a second composition comprising at least one color changing agent, wherein the at least one pigment is capable of imparting a first color to the hair that can be changed to a second hair color by the color changing agent of the second composition, and wherein the pH of the first and second compositions are different; and wherein the at least one pigment comprises at least one anthocyanin. ### Claim 2 (depends on 1) The system of claim 1, wherein the at least one pigment is chosen from cyanidin, delphinidin, malvidin, pelargonidin, peonidin, or petunidin. ### Claim 3 (depends on 1) The system of claim 1, wherein the at least one anthocyanin is chosen from cyanidin-3-diglucoside-5-glucoside, optionally acylated with p-coumaric, ferulic, or sinapic acids, or combinations thereof. ### Claim 4 (depends on 1) The system of claim 1, wherein the at least one anthocyanin is derived from a natural source. ### Claim 5 (depends on 4) The system of claim 4, wherein the at least one anthocyanin is derived from radishes, purple sweet potatoes, apples, blueberries, raspberries, cranberries, red cabbage, strawberries, eggplant, beets, cherries, curry powder, grapes, onions, peaches, pears, plums, radishes, tomatoes, oranges, purple corn, lingonberries, olives, or turnips. ### Claim 6 (depends on 1) The system of claim 1, wherein the at least one pigment is present in the first composition in an amount ranging from about 0.001% to about 10% by weight, relative to the total weight of the first composition. ### Claim 7 (depends on 1) The system of claim 1, wherein the pH of the first composition ranges from about 3 to about 4. ### Claim 8 (depends on 7) The system of claim 7, wherein the pH of the first composition is about 3.5. ### Claim 9 (depends on 1) The system of claim 1, wherein the at least one color changing agent is chosen from mineral salts, alkali metal phosphates and carbonates, alkali metals of carboxylates, mineral or organic acids, or combinations thereof. ### Claim 10 (depends on 9) The system of claim 9, wherein the at least one color changing agent is chosen from citric acid, sodium phosphate monobasic, sodium citrate, sodium phosphate dibasic, sodium bicarbonate, sodium carbonate, or combinations thereof. ### Claim 11 (depends on 1) The system of claim 1, wherein the at least one color changing agent is present in the second composition in an amount ranging from about 0.001% to about 10% by weight, relative to the total weight of the second composition. ### Claim 12 (depends on 1) The system of claim 1, wherein the first composition and/or second composition comprise at least one additional component chosen from cationic surfactants, nonionic surfactants, cationic polymers, fatty compounds, amino silicones, thickeners, solvents, pH adjusters, preservatives, conditioning agents, or combinations thereof. ### Claim 13 A method for changing the color of the hair, comprising: (i) applying a first composition comprising at least one pigment to the hair, and (ii) applying a second composition comprising at least one color changing agent to the hair, wherein the hair is rinsed after the application of the first composition and before the application of the second composition, wherein the at least one pigment is capable of imparting a first color to the hair that can be changed to a second hair color by the color changing agent of the second composition, and wherein the pH of the first and second compositions are different. ### Claim 14 (depends on 13) The method of claim 13, wherein the first composition is left on the hair for a period of time ranging from about 5 to about 60 minutes before it is rinsed. ### Claim 15 (depends on 13) The method of claim 13, wherein the at least one pigment is chosen from at least one anthocyanin. ### Claim 16 (depends on 15) The method of claim 15, wherein the at least one pigment is chosen from cyanidin, delphinidin, malvidin, pelargonidin, peonidin, or petunidin. ### Claim 17 (depends on 15) The method of claim 15, wherein the at least one anthocyanin is chosen from cyanidin-3-diglucoside-5-glucoside, optionally acylated with p-coumaric, ferulic, or sinapic acids, or combinations thereof. ### Claim 18 (depends on 15) The method of claim 15, wherein the at least one anthocyanin is derived from a natural source. ### Claim 19 (depends on 18) The method of claim 18, wherein the at least one anthocyanin is derived from radishes, purple sweet potatoes, apples, blueberries, raspberries, cranberries, red cabbage, strawberries, eggplant, beets, cherries, curry powder, grapes, onions, peaches, pears, plums, radishes, tomatoes, oranges, purple corn, lingonberries, olives, or turnips. ### Claim 20 (depends on 13) The method of claim 13, wherein the at least one pigment is present in the first composition in an amount ranging from about 0.01% to about 10%, relative to the total weight of the first composition. ### Claim 21 (depends on 13) The method of claim 13, wherein the pH of the first composition ranges from about 3 to about 4. ### Claim 22 (depends on 21) The method of claim 21, wherein the pH of the first composition is about 3.5. ### Claim 23 (depends on 13) The method of claim 13, wherein the at least one color changing agent is chosen from mineral salts, alkali metal phosphates and carbonates, alkali metals of carboxylates, or mineral or organic acids. ### Claim 24 (depends on 23) The method of claim 23, wherein the at least one color changing agent is chosen from citric acid, sodium phosphate monobasic, sodium citrate, sodium phosphate dibasic, sodium bicarbonate, and sodium carbonate. ### Claim 25 (depends on 13) The method of claim 13, wherein the at least one color changing agent is present in the second composition in an amount ranging from about 0.01% to about 10%, relative to the total weight of the second composition. ### Claim 26 (depends on 13) The method of claim 13, wherein the first composition and/or second composition comprise at least one additional component chosen from cationic surfactants, nonionic surfactants, cationic polymers, fatty compounds, amino silicones, thickeners, solvents, pH adjusters, preservatives, and conditioning agents. ### Claim 27 A kit comprising: (i) a first container comprising a first composition comprising at least one pigment, and (ii) a second container comprising a second composition comprising at least one color changing agent, wherein the at least one pigment is capable of imparting a first color to the hair that can be changed to a second hair color by the color changing agent of the second composition, and wherein the pH of the first and second compositions are different; and wherein the at least one pigment comprises at least one anthocyanin. ### Claim 28 A system for changing the color of the hair, comprising: (i) a first composition comprising: (a) at least one anthocyanin chosen from cyanidin-3-diglucoside-5-glucoside, optionally acylated with p-coumaric, ferulic, or sinapic acids, or combinations thereof, (b) at least one solvent chosen from water and organic solvents, and (c) optionally at least one additional component chosen from cationic surfactants, nonionic surfactants, cationic polymers, fatty compounds, amino silicones, thickeners, solvents, pH adjusters, preservatives, conditioning agents, or combinations thereof; and (ii) a second composition comprising: (a) at least one color changing agent chosen from citric acid, sodium phosphate monobasic, sodium citrate, sodium phosphate dibasic, sodium bicarbonate, sodium carbonate, or combinations thereof; and (b) at least one solvent chosen from water and organic solvents, wherein the at least one pigment is capable of imparting a first color to the hair that can be changed to a second hair color by the color changing agent of the second composition, and wherein the pH of the first and second compositions are different.