Abstract: The present invention relates to a solid composition intended in particular for washing and/or conditioning keratin fibres, notably human keratin fibres such as the hair, and which comprises a particular combination of at least two anionic surfactants, of which one is of sulfonate type and the other is of carboxylate type, in the presence of at least one cationic polysaccharide. The invention also relates to a packaging article containing said solid composition, and also to cosmetic processes for treating keratin fibres, in particular human keratin fibres such as the hair, using said solid composition or said packaging article. The invention also relates to the use of said solid composition or of said packaging article for washing and/or conditioning keratin fibres, in particular human keratin fibres such as the hair.

Abstract: The present invention relates to a solid composition intended in particular for washing and/or conditioning keratin fibres, notably human keratin fibres such as the hair, and which comprises an anionic surfactant and a mixture of citric acid and alkali metal or alkaline-earth metal bicarbonate. The invention also relates to a packaging article containing said solid composition, and also to cosmetic processes for treating keratin fibres, in particular human keratin fibres such as the hair, using said solid composition or said packaging article. The invention also relates to the use of said solid composition or of said packaging article for washing and/or conditioning keratin fibres, in particular human keratin fibres such as the hair.

Abstract: The present invention relates to a solid composition intended in particular for washing and/or conditioning keratin fibres, notably human keratin fibres such as the hair, and which comprises a particular combination of at least two anionic surfactants, of which one is of sulfonate type and the other is of carboxylate type. The invention also relates to a packaging article enclosing said solid composition, and also to cosmetic processes for treating keratin fibres, in particular human keratin fibres such as the hair, using said solid composition or said packaging article. The invention also relates to the use of said solid composition or of said packaging article for washing and/or conditioning keratin fibres, in particular human keratin fibres such as the hair.

Abstract: The present invention relates to a solid composition intended in particular for washing and/or conditioning keratin fibres, notably human keratin fibres such as the hair, and which comprises a particular combination of at least two anionic surfactants, of which one is of sulfonate type and the other is of carboxylate type, in the presence of at least one particular filler. The invention also relates to a packaging article comprising said solid composition, and also to cosmetic processes for treating keratin fibres, in particular human keratin fibres such as the hair, using said solid composition or said packaging article. The invention also relates to the use of said solid composition or of said packaging article for washing and/or conditioning keratin fibres, in particular human keratin fibres such as the hair.

Abstract: The invention relates to a cosmetic composition comprising a cationic associative polymer, a particular carboxylic anionic surfactant, optionally a nonionic surfactant and an amphoteric or zwitterionic surfactant. The invention also relates to a cosmetic process for treating keratin fibres, in particular human keratin fibres such as the hair, comprising the application of said cosmetic composition. The invention also relates to the use of said cosmetic composition for conditioning keratin fibres, in particular human keratin fibres such as the hair.

Abstract: The disclosure relates to a method for transforming levoglucosenone into 4-hydroxymethyl butyrolactone or 4-hydroxymethyl butenolide, comprising a step involving the oxidation of the levoglucosenone, or dihydrolevoglucosenone obtained by hydrogenation of levoglucosenone, by bringing a solution of levoglucosenone or dihydrolevoglucosenone in a solvent into contact with a lipase in the presence of an oxidizing agent and an acyl donor compound. The oxidation step is followed by a step involving the hydrolysis of the reaction mixture obtained and, if necessary, a step involving the hydrogenation of the compound obtained at the end of the hydrolysis step.