Method for coloring hair wherein a first hair coloring composition comprising one or more direct dyes is applied to a first region the hair and a second hair coloring composition is applied to a second region of the hair, wherein the pH of the second composition is lower or higher than the pH of the
Method for coloring hair wherein a first hair coloring composition comprising one or more direct dyes is applied to a first region the hair and a second hair coloring composition is applied to a second region of the hair, wherein the pH of the second composition is lower or higher than the pH of the first composition.
대표청구항▼
1. A method for colouring hair comprising the steps of: i) providing a first hair colouring composition and a second hair colouring composition, wherein each of the first and second compositions comprises one or more direct dyes and the pH of the second hair colouring composition is lower or higher
1. A method for colouring hair comprising the steps of: i) providing a first hair colouring composition and a second hair colouring composition, wherein each of the first and second compositions comprises one or more direct dyes and the pH of the second hair colouring composition is lower or higher than the pH of the first hair colouring composition;ii) applying a portion or all of the first hair colouring composition to a first region of the hair;iii) applying a portion or all of the second hair colouring composition to a second region of the hair. 2. The method according to claim 1, wherein the method further comprises the step of: iv) rinsing the hair. 3. The method according to claim 1, wherein the second region is different from the first region. 4. The method according to claim 1, wherein the difference of pH between the first composition and the second composition is at least 0.1. 5. The method according to claim 1, wherein the difference of pH between the first composition and the second composition is at least 0.25. 6. The method according to claim 1, wherein the difference of pH between the first composition and the second composition is at least 0.5. 7. The method according to claim 1, wherein the first region is the hair roots and the second region is the hair lengths and tips. 8. The method according to claim 1, wherein the one or more direct dyes is selected from the group consisting of cationic direct dyes, anionic direct dyes, and mixtures thereof. 9. The method according to claim 8, wherein the cationic direct dyes are selected from the group consisting of Basic Brown 17, Basic Red 118, Basic Orange 69, Basic Red 76, Basic Brown 16, Basic Yellow 57, Basic Violet 14, Basic Blue 7, Basic Blue 26, Basic Red 2, Basic Blue 99, Basic Yellow 29, Basic Red 51, Basic Orange 31, Basic Yellow 87, Basic Violet 2, 4-(3-(4-amino-9,10-dioxo-9,10-dihydroanthracen-1-ylamino)propyl)-4-methylmorpholin-4-ium -methylsulfate, (E)-1-(2-(4-(4,5-dimethylthiazol-2-yl)diazenyl)phenyl)(ethyl)aminolethyl)-3-methyl-1H-imidazol-3-ium chloride, (E)-4-(2-(4-(dimethylamino)phenyl)diazenyl)-1-methyl-1H-imidazol-3-ium-3-yl)butane-1-sulfonate, (E)-4-(4-(2-methyl-2-phenylhydrazono)methyl)pyridinium-1-yl)butane-1-sulfonate, N,N-dimethyl-3-(4-(methylamino)-9,10-dioxo-4a,9,9a, 10-tetrahydroanthracen-1-ylamino)-N-propylpropan-1-aminium bromide and mixtures thereof and the anionic direct dyes are selected from the group consisting of Acid Yellow 1, Acid Orange 3, Acid Black 1, Acid Black 52, Acid Orange 7, Acid Red 33, Acid Yellow 23, Acid Blue 9, Acid Violet 43, Acid Blue 62, Acid Blue 25, Acid Red 4, Acid Red 92, Acid Yellow 3, Acid Red 18, Acid Red 52, Acid Green 25, and mixtures thereof. 10. The method according to claim 1, wherein: in step ii), a first portion of the first composition is applied to the first region of the hair and a second portion of the first composition is retained andthe method further comprises the step of adding a pH modifying agent to the second portion of the first composition to obtain the second composition. 11. The method according to claim 10, wherein the pH of the second hair colouring composition is lower than the pH of the first hair colouring composition and the pH modifying agent is a pH reducing agent. 12. The method according to claim 11, wherein the pH reducing agent is selected from the group consisting of acetic acid, acetyl mandelic acid, adipic acid, aluminum lactate, aluminum triformate, ammonium lactate, ammonium molybdate, ammonium nitrate, ammonium thiocyanate, ammonium vanadate, ascorbic acid, azelaic acid, babassu acid, bakuhan, benzilic acid, bismuth citrate, boric acid, calcium citrate, calcium dihydrogen phosphate, calcium phosphate, citric acid, diammonium citrate, dioleyl phosphate, disodium pyrophosphate, fumaric acid, galacturonic acid, glucoheptonic acid, glucuronic acid, glutaric acid, glycine, glycolic acid, glyoxylic acid, hydrobromic acid, hydrochloric acid, hydroxyethylpiperazine ethane sulfonic acid, isobutyric acid, lactic acid, lactobionic acid, magnesium glycinate, magnesium lactate, maleic acid, malic acid, malonic acid, maltobionic acid, metaphosphoric acid, monosodium citrate, mudstone powder, phenolsulfonphthalein, phenyl mercuric borate, phosphoric acid, phosphorus pentoxide, potassium bicarbonate, potassium biphthalate, potassium magnesium aspartate, potassium sodium tartrate, potassium tartrate, propane tricarboxylic acid, quinic acid, ribonic acid, sebacic acid, sodium aspartate, sodium bisulfate, sodium borate, sodium butoxyethoxy acetate, sodium calcium boron phosphate, sodium calcium copper phosphate, sodium calcium zinc phosphate, sodium citrate, sodium glycolate, sodium lactate, sodium phosphate, sodium succinate, succinic acid, sulfuric acid, tartaric acid, taurine,tea-hydroiodide, trisodium sulfosuccinate, triticum vulgare protein, triticum vulgare seed extract, uric acid, zinc hexametaphosphate, and mixtures thereof. 13. The method according to claim 11, wherein the pH reducing agent is selected from the group consisting of citric acid, phosphoric acid, salicylic acid, etidronic acid, acetic acid, ascorbic acid, hydrochloric acid, sulfuric acid, and mixtures thereof. 14. The method according to claim 11, wherein the pH of the first hair colouring composition is from 6 to 10 and the pH of the second hair colouring composition is from 2 to 8. 15. The method according to claim 10, wherein the pH of the second hair colouring composition is higher than the pH of the first hair colouring composition and the pH modifying agent is a pH increasing agent. 16. The method according to claim 15, wherein the pH increasing agent is selected from the group consisting of 1,6-hexanediamine, 2-aminobutanol, aminoethyl propanediol, aminomethyl propanediol, aminomethyl propanol, aminopropanediol, ammonia, ammonium bicarbonate, ammonium carbamate, ammonium carbonate, ammonium chloride, ammonium glycolate, ammonium hydroxide, ammonium phosphate, bis-hydroxyethyl tromethamine, butyl diethanolamine,calcium carbonate, calcium glycinate, calcium hydroxide, calcium oxide, copper glycinate, diammonium phosphate, dibutyl ethanolamine, diethyl ethanolamine, dimethyl isopropanolamine, dimethyl mea, dipotassium phosphate, disodium fumarate, disodium phosphate, disodium tartrate, ethanolamine, ethyl ethanolamine, guanidine carbonate, guanidine hcl, imidazole, isopropanolamine, isopropylamine, lithium carbonate, lithium hydroxide, magnesium hydroxide, magnesium oxide, methylethanolamine, pentapotassium triphosphate, pentasodium triphosphate, phenolsulfonphthalein, phenyl mercuric borate, potassium borate, potassium carbonate, potassium citrate, potassium hydroxide, potassium oxide, potassium phosphate, sesquiethoxytriethanolamine, sodium acetate, sodium aluminate, sodium aluminum lactate, sodium bicarbonate, sodium carbonate, sodium formate, sodium fumarate, sodium humate, sodium hydroxide, sodium metaphosphate, sodium metasilicate, sodium oxide, sodium sesquicarbonate, sodium silicate, sodium trimetaphosphate, strontium hydroxide,tea-diricinoleate/ipdi copolymer, tetrahydroxyethyl ethylenediamine, tetrapotassium pyrophosphate, tetrasodium pyrophosphate, triethanolamine, triisopropanolamine, trisodium phosphate, tromethamine, urea, zinc carbonate hydroxide, zinc glycinate, and mixtures thereof. 17. The method according to claim 15, wherein the pH increasing agent is selected from the group consisting of ammonia, ammonium bicarbonate, ammonium carbonate, ammonium chloride, ammonium hydroxide, ammonium phosphate, calcium carbonate, calcium hydroxide, calcium oxide, diammonium phosphate, dipotassium phosphate, ethanolamine, isopropanolamine, isopropylamine, magnesium hydroxide, magnesium oxide, potassium borate, potassium carbonate, potassium citrate, potassium hydroxide, potassium oxide, sodium bicarbonate, sodium borate, sodium carbonate, sodium hydroxide, sodium sesquicarbonate, sodium silicate, urea, and mixtures thereof. 18. The method according to claim 15, wherein the pH of the first hair colouring composition is from 2 to 8 and the pH of the second hair colouring composition is from 6to 10. 19. A hair colouring kit comprising a first hair colouring composition and a second hair colouring composition, wherein each of the first and second compositions comprises one or more direct dyes and the pH of the second hair colouring composition is lower or higher than the pH of the first hair colouring composition.
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이 특허에 인용된 특허 (5)
Agostino, Elizabeth Hitchcock; Ripley, Aideen Noelle; Schofield, Stephen Robert; Stephens, Tracy; Vohra, Firoj; de Waal, Gabriele; Myatt, Graham John; Bureiko, Andrei Sergeevich; Lane, Brandon Scott; Marsh, Jennifer Mary; Vanderhorst, Jaime Beverly; Godfrey, Simon Paul; Odman, Ozge, Hair colouring methods and compositions thereof.
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