Abstract: A process for improving the results of cosmetic treatments on bleached hair is provided.

Abstract: The present invention provides a process for bleaching a lock or portion of lock of hair, at least partially, by irradiation of the lock using a laser beam in the form of pulses, and a device for implementation of same.

Abstract: The invention relates to oxidation dyeing compositions comprising oxidation dyestuff precursors and N-substituted ortho-nitroanilines of the formula: ##STR1## in which R.sub.1 denotes an alkyl, monohydroxyalkyl or polyhydroxyalkyl group, R.sub.2 denotes hydrogen or an amino, monoalkylamino, dialkylamino, mono- or di-(monohydroxyalkyl or polyhydroxyalkyl)-amino, (N-alkyl-N-monohydroxyalkyl or N-alkyl-N-polyhydroxyalkyl)-amino, alkoxy, monohydroxyalkoxy, polyhydroxyalkoxy or aminoalkoxy group and R.sub.3 denotes hydrogen or an alkyl group, at least one of R.sub.2 and R.sub.3 being different from H, with the proviso that if R.sub.1 denotes --CH.sub.2 CH.sub.2 OH, R.sub.2 cannot be di-(monohydroxyalkyl)-amino in an alkaline medium which is non-ammoniacal and comprises an alkali metal or ammonium bisulphite and at least one alkanolamine which is N-(C.sub.1 to C.sub.4 -alkyl-ethanolamine, N,N-di(C.sub.1 to C.sub.4 -alkyl)-ethanolamine, di-(hydroxy-C.sub.2 to C.sub.

Abstract: A process for preparing a hair dye or bleach composition which comprises mixing a gelifiable liquid vehicle with an oxidizing solution having dissolved therein an incompatible cationic polymer. The resulting gel is applied to the hair and after an appropriate contact time, the hair is rinsed.

Abstract: A process for dyeing keratin fibres is disclosed which involved applying:(a) at least one dyestuff of the formula: ##STR1## in which R.sub.1 and R.sub.2 independently designate hydrogen, amino, alkylamino, --NH--aliphatic--(X).sub.m, dialkylamino or --N--(aliphatic-(X).sub.m).sub.2, R.sub.3 designates hydrogen, OH, alkoxy or --O--aliphatic-(X).sub.m "aliphatic" designates an aliphatic radical having 2 to 4 free valencies, m designates an integer from 1 to 3 such that if m=1 X represents OH, Cl, OCH.sub.3 or OCH.sub.2 CH.sub.2 OH, or, if m designates 2 or 3, X designates OH, and R.sub.4 designates hydrogen, alkyl or halogen, with the proviso that at least one of R.sub.1, R.sub.2 and R.sub.3 is other than hydrogen, and that, if R.sub.1 and R.sub.2 are both other than hydrogen, R.sub.3 designates hydrogen,(b) at least one dyestuff of the formula: ##STR2## in which R.sub.5 designates hydrogen, amino, aminoalkyl, NH-aliphatic-(X).sub.m, N-(alkyl).sub.2, N-(aliphatic(X).sub.m).sub.2, or NHCH.sub.2 CH.sub.2 NH.sub.

Abstract: A process for preparing a hair dye or bleach composition which comprises mixing a gelifiable liquid vehicle with an oxidizing solution having dissolved therein an incompatible cationic polymer. The resulting gel is applied to the hair and after an appropriate contact time, the hair is rinsed.

Abstract: Dyeing compositions are disclosed which comprise at least one oxidation dyestuff precursor in combination with at least one direct dyestuff, in an aqueous vehicle, the direct dyestuff being a nitro derivative of the benzene series having the formula: ##STR1## in which R.sub.1 denotes the methyl group, R.sub.2 and R.sub.4 denote hydrogen and R.sub.3 denotes the .beta.-hydroxyethoxy group, or alternatively R.sub.1, R.sub.3 and R.sub.4 denote hydrogen and R.sub.2 denotes the methyl or hydroxyl group, or alternatively R.sub.1 and R.sub.2 denote hydrogen, R.sub.3 denotes the methyl group and R.sub.4 denotes the hydroxyl, (.beta.-hydroxyethyl)-amino or (.beta.-N,N-diethylaminoethyl)-amino group, or R.sub.1, R.sub.2 and R.sub.3 denote hydrogen and R.sub.4 denotes the N,N-bis-(.beta.-hydroxyethyl)-amino group.

Abstract: A process for dyeing hair comprises in sequence applying to the hair an oxidation hair dye composition comprising a mixture of an oxidation dye, a cationic polymer and an oxidizing agent in an oxidation dye carrier, permitting said oxidation hair dye composition to remain in contact therewith for a time ranging from about 15-40 minutes, rinsing the hair with water, then applying to the rinsed hair a shampoo composition containing an anionic detergent and thereafter rinsing said hair with water.

Abstract: Creams and gelatinizable liquid which contain oxidation dyes and a vehicle, useful for dyeing hair, are disclosed.

Abstract: A process for dyeing hair comprises in sequence applying to the hair an oxidation hair dye composition comprising a mixture of an oxidation dye, a cationic polymer and an oxidizing agent in an oxidation dye carrier, permitting said oxidation hair dye composition to remain in contact therewith for a time ranging from about 15-40 minutes, rinsing the hair with water, then applying to the rinsed hair a shampoo composition containing an anionic detergent and thereafter rinsing said hair with water.

Abstract: A cosmetic composition which at ambient temperature comprises a solution in a water or hydroalcoholic solvent of at least one cosmetic component which in said solution at ambient temperature is not stable, can be preserved, stabilized and packaged by freezing said composition and storing it at a temperature below its freezing point.

Abstract: A dye composition for keratinic fiber and particularly living human hair comprises an admixture of one or more diphenylamines whose corresponding indoamine has an oxidation-reduction potential between -450 and -350 mv and a polyhydroxybenzene having an oxidation-reduction potential between -600 and -300 mv and having the formula ##STR1## wherein R.sub.1 represents hydroxy or ##STR2## wherein R.sub.3 represents hydrogen or alkyl, and R.sub.2 represents hydrogen, or NH.sub.2 when R.sub.1 represents NH.sub.2, said diphenylamine and polyhydroxybenzene being present in an amount such that the ratio of the total number of moles of diphenylamine to the number of moles of polyhydroxybenzene is between 2 and 7.