Abstract: Keratinic fiber treatment methods that increase the bond density of damaged hair are disclosed, the methods include the application to the hair of potassium azeloyl diglycinate in weight percentages ranging between 0.1 and 6%, preferably between 0.5 and 3%.

Abstract: Keratinic fiber treatment methods that increase the bond density of damaged hair are disclosed, the methods include the application to the hair of potassium azeloyl diglycinate in weight percentages ranging between 0.1 and 6%, preferably between 0.5 and 3%.

Abstract: The invention relates to hair colouring compositions in gel or emulsion-gel form containing no ethoxylated additives, ethanolamine or polyethylene glycols.

Abstract: The invention relates to hair colouring compositions in gel or emulsion-gel form containing no ethoxylated additives, ethanolamine or polyethylene glycols.

Abstract: Disclosed are hair-straightening compositions in liquid form with an aqueous base, or in the form of an emulsion with a fatty phase, comprising glyoxylic acid and levulinic acid.

Abstract: A hair-colouring composition comprising an estolide ester derived from ricinoleic acid and direct dyes.

Abstract: The present invention relates to hair colouring compositions free of resorcinol, 2-methyl resorcinol, 4-chloro resorcinol and resorcinol derivatives and free of methoxymethyl-p-phenylenediamine, said compositions comprising at least three dyes selected from at least one primary dye selected from p-toluenediamine sulphate, p-aminophenol, N-methyl-p-aminophenol sulphate and 1-hydroxyethyl-4,5-diamino pyrazole sulphate, and at least two secondary dyes selected from hydroxyethyl 3,4-methylenedioxyaniline HCl, 2-amino-3-hydroxypyridine and 2-methyl-5-hydroxyethylaminophenol, or at least two primary dyes selected from p-toluenediamine sulphate, p-aminophenol, N-methyl-p-aminophenol sulphate and 1-hydroxyethyl-4,5-diamino pyrazole sulphate, and at least one secondary dye selected from hydroxyethyl 3,4-methylenedioxyaniline HCl, 2-amino-3-hydroxypyridine and 2-methyl-5-hydroxyethylaminophenol.

Abstract: Disclosed is a hair colouring composition containing amino acids with at least a pKa greater than 10, oxidative dyes, and acetylaspartic acid or salts thereof. The compositions according to the invention do not contain ammonia or ethanolamine, do not damage the hair, guarantee shine and combability, and also cover white hair and withstand blue light.

Abstract: The present invention relates to hair colouring compositions free of resorcinol, 2-methyl resorcinol, 4-chloro resorcinol and resorcinol derivatives and free of methoxymethyl-p-phenylenediamine, said compositions comprising at least three dyes selected from at least one primary dye selected from p-toluenediamine sulphate, p-aminophenol, N-methyl-p-aminophenol sulphate and 1-hydroxyethyl-4,5-diamino pyrazole sulphate, and at least two secondary dyes selected from hydroxyethyl 3,4-methylenedioxyaniline HCl, 2-amino-3-hydroxypyridine and 2-methyl-5-hydroxyethylaminophenol, or at least two primary dyes selected from p-toluenediamine sulphate, p-aminophenol, N-methyl-p-aminophenol sulphate and 1-hydroxyethyl-4,5-diamino pyrazole sulphate, and at least one secondary dye selected from hydroxyethyl 3,4-methylenedioxyaniline HCl, 2-amino-3-hydroxypyridine and 2-methyl-5-hydroxyethylaminophenol.

Abstract: Disclosed are m-aminophenol-free hair-colouring compositions comprising a mixture of dyes consisting of methoxymethyl-p-phenylenediamine, hydroxyethyl-3,4-methylenedioxyaniline and 5-amino-6-chloro-o-cresol, an alkalising agent, and optionally other oxidative dyes, provided that they are not p-phenylenediamine or p-toluenediamine The compositions according to the invention provide stable colours that do not change with time.

Abstract: Disclosed is a hair colouring composition containing amino acids with at least a pKa greater than 10, oxidative dyes, and acetylaspartic acid or salts thereof. The compositions according to the invention do not contain ammonia or ethanolamine, do not damage the hair, guarantee shine and combability, and also cover white hair and withstand blue light.

Abstract: Disclosed are hair-colouring compositions comprising an oxidative dye and an alkalising agent consisting of isopropanolamine and a malic acid diester. The compositions according to the invention, due to synergic effects between isopropanolamine and the malic acid diester, are advantageous, because they lighten the hair by up to four levels, do not have an unpleasant odour, and limit the damage caused to the hair, maintaining its integrity and consequently its natural characteristics of elasticity, shine and combability.

Abstract: Disclosed are m-aminophenol-free hair-colouring compositions comprising a mixture of dyes consisting of methoxymethyl-p-phenylenediamine, hydroxyethyl-3,4-methylenedioxyaniline and 5-amino-6-chloro-o-cresol, an alkalising agent, and optionally other oxidative dyes, provided that they are not p-phenylenediamine or p-toluenediamine The compositions according to the invention provide stable colours that do not change with time.

Abstract: Disclosed are hair-colouring compositions comprising an oxidative dye and an alkalising agent consisting of isopropanolamine and a malic acid diester. The compositions according to the invention, due to synergic effects between isopropanolamine and the malic acid diester, are advantageous, because they lighten the hair by up to four levels, do not have an unpleasant odour, and limit the damage caused to the hair, maintaining its integrity and consequently its natural characteristics of elasticity, shine and combability.

Abstract: A hair-colouring composition comprising an estolide ester derived from ricinoleic acid and direct dyes.

Abstract: Disclosed are compositions for dyeing keratin fibers comprising at least one direct dye and/or an oxidative dye and optionally an activator, and also comprising a compound formed by esterification of phosphoric acid with isooctanol (2-ethylhexanol) and ethoxylated tridecylic alcohol.

Abstract: The present invention relates to ready-to-use gel compositions for coloring hair in the form of an aqueous solution comprising: at least one Acrylates/Methacrylamide Copolymer; at least one cellulose derivative; at least one cross-linked polymer of acrylic acid or methacrylic acid or salts thereof; at least one oxidation dye and optionally at least one direct dye; at least one alkalizing agent; hydrogen peroxide or an hydrogen peroxide adduct.

Abstract: Disclosed are compositions for dyeing keratin fibers comprising at least one direct dye and/or an oxidative dye and optionally an activator, and also comprising a compound formed by esterification of phosphoric acid with isooctanol (2-ethylhexanol) and ethoxylated tridecylic alcohol.

Abstract: Disclosed is a hair colouring method which comprises application to the hair of at least one dye of formula I and/or II combined with a coupler of formula III: wherein R1-R6 and X are as defined in the description.

Abstract: The present invention relates to ready-to-use gel compositions for coloring hair in the form of an aqueous solution comprising: at least one Acrylates/Methacrylamide Copolymer; at least one cellulose derivative; at least one cross-linked polymer of acrylic acid or methacrylic acid or salts thereof; at least one oxidation dye and optionally at least one direct dye; at least one alkalizing agent; hydrogen peroxide or an hydrogen peroxide adduct.