Abstract: The invention relates to a process for relaxing keratin fibers by applying to the keratin fibers a relaxing composition containing at least one denaturing agent with a molecular mass of greater than 18.1 g/mol, present in a molar concentration of between 1M and 8M, and raising the temperature of the keratin fibers to a temperature of between 110 and 250° C.

Abstract: The invention relates to a process for relaxing keratin fibres by applying to the keratin fibres a relaxing composition containing at least one denaturing agent with a molecular mass of greater than 18.1 g/mol, present in a molar concentration of between 1M and 8M, and raising the temperature of the keratin fibres to a temperature of between 110 and 250° C.

Abstract: The present disclosure relates to a ready-to-use cosmetic composition for permanently shaping keratin fibers comprising, as the active permanent shaping agent, at least one amine chosen from secondary and tertiary amines. The present disclosure is also directed to a kit comprising the ready-to-use composition, and also to a process using this composition.

Abstract: Disclosed herein is a ready-to-use cosmetic composition for relaxing keratin fibers comprising, as relaxing agent, at least one secondary or tertiary amine. Further disclosed herein are a kit comprising at least two compartments to be placed in contact to form the ready-to-use composition, and a process using this composition.

Abstract: The present disclosure relates to double secondary para-phenylenediamine dye compounds. The present disclosure further relates to a dye composition comprising at least one double secondary para-phenylenediamine compound, a process for dyeing keratin fibers using the composition, and a kit for dyeing keratin fibers comprising a separate composition comprising an oxidizing agent.

Abstract: The present disclosure relates to a process for dyeing human keratin materials having a lightening effect, applying to the materials a composition comprising, in a cosmetically acceptable medium, at least one fluorescent dye having the following formula: The present disclosure also relates to at least one fluorescent dye, to a composition comprising the at least one fluorescent dye, and to a multi-compartment kit comprising the said composition.

Abstract: The present application relates to a novel family of double para-phenylenediamines joined by a linkage comprising a saturated cyclic radical and use thereof for the dyeing of keratin fibers. These novel para-phenylenediamines can be used as an oxidation base for the dyeing of keratin fibers. Methods of making and using, and a dyeing kit are also disclosed.

Abstract: The present disclosure relates to a ready-to-use cosmetic composition for relaxing keratin fibers in a cosmetically acceptable medium comprising, as an active relaxing agent, a polyguanidine not belonging to the hydroxide family. The present disclosure is also directed to a multi-compartment kit comprising at least two compartments to be placed in contact to form the ready-to-use composition. Another aspect of the present disclosure relates to a process for using the presently disclosed composition.

Abstract: Disclosed herein is a ready-to-use cosmetic composition for shaping keratin fibers, comprising, in a cosmetically acceptable medium, as active agent for shaping, a polyguanidine not belonging to the hydroxide family. Also disclosed herein is a kit comprising at least two compartments to be brought into contact to form the ready-to-use composition. Further disclosed herein is a method for shaping keratin fibers comprising applying this composition to the keratin fibers.

Abstract: The invention relates to a process for relaxing keratin fibres by applying to the keratin fibres a relaxing composition containing at least one denaturing agent with a molecular mass of greater than 18.1 g/mol, present in a molar concentration of between 1M and 8M, and raising the temperature of the keratin fibres to a temperature of between 110 and 250° C.

Abstract: The present disclosure relates to double secondary para-phenylenediamine dye compounds. The present disclosure further relates to a dye composition comprising at least one double secondary para-phenylenediamine compound, a process for dyeing keratin fibers using the composition, and a kit for dyeing keratin fibers comprising a separate composition comprising an oxidizing agent.

Abstract: The disclosure provides para-phenylenediamine compounds, dye compositions comprising the para-phenylenediamines, and processes for dyeing keratin fibers using the compositions.

Abstract: The present disclosure relates to a ready-to-use cosmetic composition for permanently shaping keratin fibers comprising, as the active permanent shaping agent, at least one amine chosen from secondary and tertiary amines. The present disclosure is also directed to a kit comprising the ready-to-use composition, and also to a process using this composition.

Abstract: Disclosed herein is a ready-to-use cosmetic composition for relaxing keratin fibers comprising, as relaxing agent, at least one secondary or tertiary amine. Further disclosed herein are a kit comprising at least two compartments to be placed in contact to form the ready-to-use composition, and a process using this composition.

Abstract: The present disclosure relates to a process for dyeing human keratin materials having a lightening effect, applying to the materials a composition comprising, in a cosmetically acceptable medium, at least one fluorescent dye having the following formula: The present disclosure also relates to at least one fluorescent dye, to a composition comprising the at least one fluorescent dye, and to a multi-compartment kit comprising the said composition.

Abstract: A process for preparing a difunctional compound having high enantiomeric purity that is a 1,2-, 1,3-, or 1,4-diol, dithiol, or mercapto alcohol from an optically active starting material that includes an .alpha.-, .beta.-, or .gamma.-hydroxy (or mercapto) aldehyde, ketone, ester, or amide is described. The process is carried out in an anhydrous solvent medium and comprises (1) reducing the starting material with a metal hydride (e.g., sodium borohydride), (2) adding a coreactant that is substituted by at least one, but preferably two, hydroxyl or mercapto groups (e.g., pyrocatechol), and (3) directly distilling the product from the reaction medium. The coreactant preferably has a higher boiling point at normal atmospheric pressure than the difunctional compound. The difunctional compounds are used as reactants for syntheses of agrochemicals or pharmaceuticals, or as precursors for polymers.

Abstract: This invention is directed to a method for stereoselectively preparing a syn-dihydroxylated compound comprising reacting a 3-hydroxyket-1-one with a borohydride in the presence of titanium derivative.

Abstract: Method for preparing (dialkylamino-2 alkyl)sulphonyl-26 pristinamycin II.sub.B having general formula (I) ##STR1## by oxidation of (dialkylamino-2 alkyl)thio-26 pristinamycin II.sub.B with 3,5 to 20 of hydrogenperoxide equivalent, in the presence of alcaline metal tungstate, in a 2-phase medium, at a temperature between 10.degree. and 25.degree. C.

Abstract: Preparation of (dialkylamino-2 alkyl) sulphinyl-26 pristinamycin II.sub.B by oxidation of (dialkylamino-2 alkyl)thitinamycin II.sub.B, by hydrogen peroxide in the presence of sodium tungstate, in alcoholic medium.

Abstract: Di-p-toluoyl tartrate, di-t-butylacetyl tartrate, di-butyryl tartrate and di-i-valeryl tartrate of (dialkylamino-2 alkyl)sulphonyl-26 pristinamycin II.sub.B having general formula (I) wherein Alk represents a straight or branched alkylene radical and R represents straight or branched alkyl radicals, said radicals having from 1 to 10 carbon atoms.