Abstract: The invention relates to a photostable screening cosmetic composition for protecting human skin against UV rays, comprising, in a cosmetically acceptable substrate containing at least one fatty phase, 1 to 3% by weight of 4-(1,1-dimethylethyl)-4'-methoxydibenzoylmethane and at least 4.5% by weight of p-methylbenzylidenecamphor, the weight ratio of p-methylbenzylidenecamphor to 4-(1,1-dimethyl-ethyl)-4'-methoxydibenzoylmethane being higher than or equal to 3.It also relates to a process for protecting the skin against UV radiation and to a process for stabilizing 4-(1,1-dimethylethyl)-4'-methoxydibenzoylmethane against UV radiation.

Abstract: The invention relates to an oxidation dyeing composition for keratinous fibers containing, in a medium appropriate for dyeing, at least one oxidation dye precursor selected from 2-(.beta.-hydroxyethyl)-para-phenylenediamine and its acid addition salts and at least one coupler selected from a combination of 2-methylresorcinol or at least one acid addition salt thereof with 3-aminophenol or at least one acid addition salt thereof. It also relates to the use of this composition for dyeing keratinous fibers and especially hair.

Abstract: A dyeing composition for keratinous fibers and in particular for human keratinous fibers such as hair, comprising, in a suitable dyeing medium, at least one oxidation dye precursor chosen from 3-methyl-para-aminophenol, 2-methyl-para-aminophenol and 2-hydroxymethyl-para-aminophenol and their addition salts with an acid; at least one coupling agent chosen from the 2-methyl-5-aminophenols of formula (I): ##STR1## where R denotes hydrogen, methyl, ethyl, .beta.-hydroxyethyl or .gamma.-hydroxypropyl, and their addition salts with an acid; and at least one ortho-aminophenol chosen from ortho-aminophenol and 3-acetylamino-6-aminophenol or one of their addition salts with an acid. A dyeing process incorporates development by an oxidizing agent.

Abstract: Processes for the oxidative dyeing of keratinus fibers with compositions which comprise benzimidazole derivatives as couplers, at least one metaphenylenediaxnine and at least one para or ortho oxidation dye precursor, the benzimidazole derivative corresponding to the formula: ##STR1## in which: R.sub.1 represents a hydrogen atom or a C.sub.1 -C.sub.4 alkyl radical;R.sub.2 represents a hydrogen atom or a C.sub.1 -C.sub.4 alkyl radical or a phenyl radical;R.sub.3 represents a hydroxyl, amino or methoxy radical;R.sub.4 represents a hydrogen atom or a hydroxyl or methoxy or C.sub.1 -C.sub.4 alkyl radical;with the proviso that:when R.sub.3 denotes NH.sub.2, it occupies position 4;when R.sub.3 is at position 4, R.sub.4 is at position 7;when R.sub.3 is at position 5, then R.sub.4 is at position 6.

Abstract: The invention relates to a dyeing composition for keratinous fibres and in particular for human keratinous fibres such as hair, comprising, in a suitable media for dyeing, at least one oxidation dye precursor chosen from 3-methyl-para-aminophenol, 2-methyl-para-aminophenol and 2-hydroxymethyl-para-aminophenol, and their addition salts with an acid; at least one coupling agent chosen from the 2-methyl-5-aminophenols of formula (I): ##STR1## in which R is methyl, ethyl, .beta.-hydroxyethyl or .gamma.-hydroxypropyl, and their addition salts with an acid; and at least one para-phenylenediamine and/or one bis(phenylalkylenediamine) or one of their addition salts with an acid as oxidation dye precursor.

Abstract: A composition for the oxidation dyeing of keratinous fibres, in particular human keratinous fibres such as hair, of the type comprising, in a medium which is suitable for dyeing, at least one para-phenylenediamine oxidation dye precursor which is substituted in the 2 position on the benzene ring or an acid addition salt thereof, and, at least one specific meta-aminophenol coupling agent or an acid addition salt thereof. The use of this composition for dyeing keratinous fibres, in particular human keratinous fibres such as hair.

Abstract: A composition for the oxidation dyeing of keratinous fibers, in particular human keratinous fibers such as hair, comprising, in a medium suitable for dyeing, at least one 2-(.beta.-hydroxyethyl)-para-phenylenediamine oxidation dye precursor and at least one 2-methyl-5-aminophenol coupling agent, and methods of dyeing keratinous fibers with said compositions.

Abstract: A process for dyeing keratinous fibres, wherein a mixture of at least one para-aminophenol of formula: ##STR1## in which, Y is oxygen or sulphur,R is alkyl, monohydroxyalkyl, polyhydroxyalkyl, or their acid addition salts, and 6-hydroxyindole, 7- hydroxyindole or mixtures thereof, is applied to the fibers, the colour being delayed at alkaline pH with an oxidising agent.

Abstract: A composition for the oxidation dyeing of keratinous fibres, in particular human keratinous fibres such as hair, of the type comprising, in a medium suitable for dyeing, the medium containing at least one para-phenylenediamine oxidation dye precursor which is substituted in the 2 position on the benzene ring or an acid addition salt thereof, and at least one specific meta-phenylenediamine coupling agent or an acid addition salt thereof. The use of this composition for dyeing keratinous fibres, in particular human keratinous fibres such as hair.

Abstract: Compositions for the oxidative dyeing of keratinous fibers comprising an indole derivative corresponding to the formula (I): ##STR1## in which: R.sub.1 denotes a hydrogen atom or a C.sub.1 -C.sub.4 alkyl group, R.sub.2 and R.sub.3 denote a hydrogen atom or a C.sub.1 -C.sub.4 alkyl group or a carboxyl or C.sub.1 -C.sub.4 alkoxycarbonyl group, R.sub.4 and R.sub.5, which are identical or different, denote a C.sub.1 -C.sub.4 alkyl group, a C.sub.2 -C.sub.20 acyl group, an aryl group, or else R.sub.4 and R.sub.5, together with the oxygen atoms and the two carbon atoms to which they are attached, form a ring optionally containing a carbonyl group or a methylene group unsubstituted or substituted by one or two alkyl or alkoxy or alkylamino groups, it being possible for R.sub.4 and R.sub.

Abstract: A N1,N4-dihydroxyethylated 2-nitro-p-phenylenediamine of formula (I), wherein R is C3-4 aklyl, and cosmetically acceptable salts thereof, for use in direct dyeing to give blue through purple shades which are wash-fast, light-fast, weatherproof and sweat resistant, and optionally combined with yellow and optionally read or orange-coloured dyes to give natural hues.

Abstract: The invention relates to a dyeing composition for keratinous fibres and in particular for human keratinous fibres such as hair, comprising, in a suitable medium for dyeing, at least one oxidation dye precursor chosen from 3-methyl -para-aminophenol, 2-methyl-para-aminophenol and 2-hydroxymethyl-para-aminophenol, and their addition salts with an acid, as coupling agent, at least 2-methyl-5-aminophenol, or one of its addition salts with an acid; and at least one para-phenylenediamine and/or one bis-(phenylalkylenediamine) or one of their addition salts with an acid as oxidation dye precursor.

Abstract: Process for dyeing keratinous fibres, especially human keratinous fibres such as the hair, consisting in applying to these fibres a composition containing, in a medium suitable for dyeing, at least 2,6-dimethyl-l,4-diaminobenzene and/or 2,3-dimethyl-1,4-diaminobenzene and/or 2,6-diethyl-1,4-diaminobenzene, as well as its salts, and an oxidising agent, the pH of the composition applied to the fibres being less than 7 and the said composition not containing iodide ions in a sufficient quantity to oxidise the oxidation dye precursor.

Abstract: Oxidation dye composition for keratinous fibers comprising a para-aminophenol, a meta-aminophenol and a meta-phenylenediamine and dyeing process using such a composition.The invention relates to a dyeing composition for keratinous fibers and in particular for human keratinous fibers such as hair, comprising, in a suitable medium for dyeing, at least one oxidation dye precursor chosen from 3-methyl-para-aminophenol, 2-methyl-para-aminophenol and 2-hydroxymethyl-para-aminophenol, and their addition salts with an acid; at least one coupling agent chosen from the 2-methyl-5-aminophenols of formula (I): ##STR1## where R denotes hydrogen, methyl, ethyl, .beta.-hydroxyethyl or .gamma.-hydroxypropyl, and their addition salts with an acid; and, as additional coupling agent, at least one meta-phenylenediamine or one of its addition salts with an acid. The invention also relates to a dyeing process implementing development by an oxidizing agent.

Abstract: Processes for the dyeing of keratinous fibers with compositions which contain 4-hydroxy- or 4-aminobenzimidazole or their derivatives corresponding to the formula (I): ##STR1## in which: R.sub.1 and R.sub.2 represent hydrogen or alkyl, one at least of the substituents being equal to hydrogen,R.sub.3 denotes OH or NH.sub.2,as coupler for dyeing keratinous fibers, in particular hair, in the presence of a p-phenylenediamine, the ratio between the p-phenylenediamine and the coupler of formula (I) being greater than or equal to 1.2.

Abstract: Process for preserving the dyeing capacity of 5,6-dihydroxyindole or of its derivatives corresponding to the formula (I): ##STR1## in which R.sub.1, R.sub.2, R.sub.3 and R.sub.4, which are identical or different, denote hydrogen or a C.sub.1 -C.sub.4 lower alkyl, R.sub.1, R.sub.2 and R.sub.3 denoting hydrogen when R.sub.4 denotes alkyl in an aqueous medium, characterized in that the pH of the aqueous medium is adjusted to a value pH.sub.C of between 5 and 10 by employing a pH-regulating agent containing two components (A) and (B), the component (A) being chosen from pH-regulating agents which have a dissociation constant K.sub.CA in aqueous solution at 25.degree. C., such as pk.sub.CA, that is:0<pk.sub.CA -pH.sub.C .ltoreq.2.5and the component (B) being chosen from pH-regulating agents which have a dissociation constant K.sub.CB in aqueous solution at 25.degree. C., such as pk.sub.CB, that is:2<pk.sub.CB <pH.sub.C.

Abstract: A cosmetic composition in the form of a powder for dyeing hair when diluted comprising a mixture of (1) particles of a vegetable substance of the non-exhausted type and not naturally containing dye principles wherein at least 95 percent by weight of the particles of said vegetable substance have a granulometry lower than 180 microns, (2) at least one direct dye and (3) at least one solid diluent, the said solid diluent being such that it exhibits in a 40% aqueous solution or dispersion a viscosity lower than or equal to 150 centipoises at ambient temperature.

Abstract: The invention relates to a transparent cosmetic composition that protects the human epidermis, containing, in a cosmetically acceptable vehicle, by way of an agent that reflects infrared radiation, 0.5 to 10% by weight of titanium dioxide flakes of dimensions between 1.5 and 25 microns, dispersible in the cosmetic medium used, possessing a reflectance (R) of infrared radiation equal to at least 45%, and of which a 2% strength dispersion in vaseline possesses an optical transmission in the visible of at least 85%.This cosmetic composition can also contain 0.5 to 20% by weight of UV-A, UV-B or broad-band screening agents.

Abstract: Method for dyeing keratinous fibres, in particular human keratinous fibres such as hair, characterized in that a composition containing, in a medium appropriate for dyeing:at least the coupler 4-hydroxyindole, as well as the salts of this compound;at least one oxidation dye precursor; andat least one oxidising agent; is applied to said fibres, the pH of the composition applied to the fibres being less than 7.

Abstract: Oxidation tinctorial composition intended to be used for dyeing keratinous fibres, in particular human keratinous fibres and especially hair, characterized in that it contains, in a solvent medium appropriate for dyeing these fibres, at least one para oxidation dye precursor or at least one ortho oxidation dye precursor and at least one heterocyclic coupler corresponding to the formula (I): ##STR1## in which: R.sub.1 and R.sub.3, which may be identical or different, denote a hydrogen atom or a C.sub.1 -C.sub.4 alkyl group;R.sub.2 denotes a hydrogen atom, a C.sub.1 -C.sub.4 alkyl group, a carboxyl group or an alkoxycarbonyl group; at least one of the radicals R.sub.2 or R.sub.3 denotes hydrogen;R.sub.4 denotes a hydrogen atom or a C.sub.1 -C.sub.4 alkyl or C.sub.1 -C.sub.4 hydroxyalkyl or C.sub.2 -C.sub.4 polyhydroxyalkyl group;the group NHR.sub.4 occupying the positions 4, 6 or 7 of the benzene ring, as well as their salts.