Abstract: The present invention provides a method which achieves a simultaneous coulouring and straightening of the hair in a single step, utilizing a hair treatment composition comprising at least one carboxylic acid of formula (I) defined below and at least one direct dye: R—CO—COOH??Formula (I) In another aspect, the invention is directed to the hair treatment composition and the use thereof for straightening and colouring the hair.

Abstract: The present invention a process for straightening the hair, using a composition comprising at least one carboxylic acid of the formula (I): R—CO—COOH Formula (I) The process of the invention is characterized in that it involves the treating of the hair with the composition and the drying of the treated hair under conditions of mechanical tension and hot air flow having a temperature of 60-140° C.

Abstract: The present invention relates to a process for reducing the frizziness and improving the manageability of the hair, wherein the hair is treated with a cleansing composition and/or a conditioning composition comprising at least one carboxylic acid of the formula (I): R—CO—COOH and/or a hydrate thereof and/or a salt thereof.

Abstract: The present invention provides a hair straightening composition with improved ease of use, which leads to an enhanced smoothness of the straightened hair. The composition comprises at least one carboxylic acid of the formula (I) in combination with at least one quaternary ammonium compound having two long-chain hydrocarbon groups: R—CO—COOH Formula (I). In further aspects, the present invention concerns a process for semi-permanent straightening of the hair, utilizing said composition, the use of the composition for straightening hair, and a kit comprising the composition and a straightening iron.

Abstract: The present invention relates to a process for semi-permanent hair straightening and aftercare treatment and to a kit of compositions for use in this process. In the process of the present invention, the hair is firstly subjected to a straightening treatment using a straightening composition comprising at least one carboxylic acid of the formula (I): R—CO—COOH defined below and/or a hydrate thereof and/or a salt thereof. Then, a specific cleansing composition and/or a specific conditioning composition comprising at least one carboxylic acid of the formula (I): R—CO—COOH defined below and/or a hydrate thereof and/or a salt thereof are used as aftercare products in order to improve durability of the straightening effect.

Abstract: The present invention provides a hair straightening composition with improved ease of use and reduced smoke development during the application of a straightening iron. The composition comprises at least one carboxylic acid of the formula (I) in combination with at least one polymeric thickening agent selected from non-ionic, anionic, cationic and amphoteric polymers having a viscosity of at least 500 mPa-s measured at a polymer concentration of 1% by weight, in water and at 20° C. with a Brookfield viscometer: R—CO—COOH ??Formula (I) In further aspects, the present invention concerns a process for semi-permanent straightening of the hair, utilizing said composition, the use of the composition for straightening hair, and a kit comprising the composition and a straightening iron.

Abstract: The present invention provides a hair straightening composition with improved ease of use and reduced smoke development during the application of a straightening iron. The composition comprises at least one carboxylic acid of the formula (I) in combination with at least one polymeric thickening agent selected from non-ionic, anionic, cationic and amphoteric polymers having a viscosity of at least 500 mPa-s measured at a polymer concentration of 1% by weight, in water and at 20° C. with a Brookfield viscometer: R—CO—COOH Formula (I) In further aspects, the present invention concerns a process for semi-permanent straightening of the hair, utilizing said composition, the use of the composition for straightening hair, and a kit comprising the composition and a straightening iron.

Abstract: The present invention a process for straightening the hair, using a composition comprising at least one carboxylic acid of the formula (I): R—CO—COOH Formula (I) The process of the invention is characterized in that it involves the treating of the hair with the composition and the drying of the treated hair under conditions of mechanical tension and hot air flow having a temperature of 60-140° C.

Abstract: The present invention relates to a process for reducing the frizziness and improving the manageability of the hair, wherein the hair is treated with a cleansing composition and/or a conditioning composition comprising at least one carboxylic acid of the formula (I): R—CO—COOH and/or a hydrate thereof and/or a salt thereof;

Abstract: The present invention relates to a process for semi-permanent hair straightening and aftercare treatment and to a kit of compositions for use in this process. In the process of the present invention, the hair is firstly subjected to a straightening treatment using a straightening composition comprising at least one carboxylic acid of the formula (I): R—CO—COOH defined below and/or a hydrate thereof and/or a salt thereof. Then, a specific cleansing composition and/or a specific conditioning composition comprising at least one carboxylic acid of the formula (I): R—CO—COOH defined below and/or a hydrate thereof and/or a salt thereof are used as aftercare products in order to improve durability of the straightening effect.

Abstract: The present invention provides a method which achieves a simultaneous coulouring and straightening of the hair in a single step, utilizing a hair treatment composition comprising at least one carboxylic acid of formula (I) defined below and at least one direct dye: R—CO—COOH??Formula (I) In another aspect, the invention is directed to the hair treatment composition and the use thereof for straightening and colouring the hair.

Abstract: The present invention provides a hair straightening composition with improved ease of use, which leads to an enhanced smoothness of the straightened hair. The composition comprises at least one carboxylic acid of the formula (I) in combination with at least one quaternary ammonium compound having two long-chain hydrocarbon groups: R—CO—COOH Formula (I). In further aspects, the present invention concerns a process for semi-permanent straightening of the hair, utilizing said composition, the use of the composition for straightening hair, and a kit comprising the composition and a straightening iron.

Abstract: The present invention provides a hair straightening composition with improved ease of use and reduced smoke development during the application of a straightening iron. The composition comprises at least one carboxylic acid of the formula (I) in combination with at least one polymeric thickening agent selected from non-ionic, anionic, cationic and amphoteric polymers having a viscosity of at least 500 mPa-s measured at a polymer concentration of 1% by weight, in water and at 20° C. with a Brookfield viscometer: R—CO—COOH Formula (I) In further aspects, the present invention concerns a process for semi-permanent straightening of the hair, utilizing said composition, the use of the composition for straightening hair, and a kit comprising the composition and a straightening iron.

Abstract: A composition for the permanent shaping of human hair, with good waving capability while avoiding damage to the hair, comprises at least one reducing agent and 0.1% to 15% by weight, calculated to the total composition, of 2-methyl-1.3-propanediol.

Abstract: A composition for the permanent shaping of human hair, with good waving capability while avoiding damage to the hair, comprises at least one reducing agent and 0.1% to 15% by weight, calculated to the total composition, of 2-methyl-1.3-propanediol.

Abstract: Composition for permanent waving of human hair comprising an at least partly water-soluble chlorophyll or chlorophyll derivative, especially an alkali magnesium or copper chlorophyllin to improve the waving performance of the composition.

Abstract: This invention refers to a composition for permanent waving of human hair, containing thioglycolic acid or the salts thereof, preferably the ammonium salt, and comprising two compositions which are kept separate until application, whereof a Composition (A) contains at least an amino acid hydrochloride and at least one polyol or the methyl and ethyl ethers thereof, preferably 1,2-propanediol in aqueous solution, having a pH-value of preferably between about 4.5 and 6.5, and a Composition (B) which is kept separate from said Composition (A) until use contains ammonium carbonate, ammonium hydrogen carbonate, and (or) ammonium carbamate as alkalizing agent(s), having a pH-value between about 8 and 9.5, and both compositions are mixed before application whereby a pH-value between about 7 and 8 is obtained. The compositions, which are kept separate, present outstanding stability; upon application after admixture optimal waving performance and, at the same time, gentle treatment of the hair is achieved.

Abstract: A permanent waving composition showing excellent waving properties and, at the same time, a hair conditioning effect containsa) at least one reducing organic thio compound and (or) an inorganic sulfite; andb) at least one organopolysiloxane, whereby at least one silicium atom is linked to an alkylene group containing a hetero atom, particularly a nitrogen atom, together with a poly-(N-acyl alkylene imine) with units of the formula ##STR1## wherein n is a number from 1 to 5 and R is hydrogen, a C.sub.1 -C.sub.12 -alkyl, cycloalkyl, aralkyl or aryl group.

Abstract: A permanent waving composition for human hair without any skin sensitizing effect comprises as reducing agent 1,3-propanediol monothioglycollate and 1,3-propanediol dithioglycollate alone or in admixture with other reducing agents, wherein the content of 1,3-propanediol dithioglycollate is not more than 10%, preferably less than 5% by wt., calculated to the monoester.

Abstract: The invention is related to a composition for the permanent waving of human hair with improved properties of use, containing alkanediols in combination with ammonium carbamate as alkalinizing compound.