摘要:
The invention relates to a dyeing composition for keratinous fibres containing, in a suitable vehicle, at least one 2-nitro-para-phenylenediamine direct dye, in free or salified form and also at least one xanthine derivative of formula (II) ##STR1## where n=0 or 1, R'.sub.3 =H, R'.sub.1, R'.sub.2, R'.sub.4 and R'.sub.5 are substituents having various significances, the said compound of formula (II) being in free or salified form. They can be used for dyeing hair.
摘要:
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.
摘要:
The invention relates to a dyeing composition for keratinous fibres containing at least one 4-bis(.beta.-hydroxyethyl)amino-2-nitro-1-(N-substituted amino)benzene compound in which the substitution is C.sub.1 -C.sub.3 alkyl or .beta.-hydroxyethyl; this composition contains as co-solubilization agent at least one dye of formula (II) ##STR1## in which formula: R.sub.2 denotes a C.sub.2 -C.sub.3 hydroxyalkyl group;R.sub.3 denotes a C.sub.2 -C.sub.3 hydroxyalkyl group; with the proviso that, if R.sub.3 =CH.sub.2 CH.sub.2 OH, R.sub.2 is necessarily an .alpha.-hydroxyethyl or hydroxypropyl radical.
摘要:
The invention relates to a dyeing composition for keratinous fibres containing, in a suitable vehicle, at least one nitrated direct dye of the 2-nitro-paraphenylenediamine series, in which the amino group in position 4 is mono- or disubstituted with lower alkyl or hydroxyalkyl radicals and in which the amino group in position 1 is optionally monosubstituted with a lower alkyl or hydroxyalkyl radial, and the aromatic ring can be substituted or unsubstituted on the remaining positions; the invention consists in introducing into such a composition an imidazolidinedione or one of its substitution derivatives, to improve the solubility of the abovementioned nitrated direct dye by a co-solubilization phenomenon. The invention also relates to a process for dyeing keratinous fibres using such compositions.
摘要:
Process for preserving the dyeing capacity of 5,6-dihydroxyindole or of of its derivatives corresponding to the formula (I); in which R1, R2, R3 and R4, which are identical or different donates hydrogen or a C1-C4 lower alkyl, R1, R2 and R3 denoting hydrogen when R4 denotes alkyl in an aqueous medium, characterized in that the pH of the aqueous medium is adjusted to a value pHC 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 KCA in aqueous solution at 25° C., such as pkCA, that is: 0
摘要:
A method of preparing a cosmetic composition includes injecting into a plurality of enclosures containing different substances at least one fluid via a plurality of injectors. The method produces a plurality of solutions which, after mixing, form all or part of the cosmetic composition.
摘要:
A method of preparing a cosmetic composition includes selecting at least one enclosure from a plurality of enclosures containing different substances, and causing a fluid to flow through the enclosure(s). The enclosures may be disposed on a common extractor apparatus and/or form part of a common refill. The fluid passing through the enclosure is collected and constitutes all or part of a cosmetic composition.
摘要:
A method of preparing a cosmetic composition includes inserting a refill having an enclosure containing a plurality of substances into an extractor apparatus and subjecting the plurality of substances to fluid injection conditions and/or to external action. The extractor apparatus is able to inject at least one fluid into the enclosure. The method allows at least one of the substances to be extracted in differentiated manner.
摘要:
The invention relates to a process for preparing a composition for the cosmetic treatment of keratin materials, wherein it comprises a step of percolating a fluid at a pressure of at least 3 bar through at least one cosmetically active compound in liquid form trapped with porous or surface-treated particles.
摘要:
The invention provides a composition and process for directly dyeing keratinic fibres. The combination of 1-N-methylamino-2-nitro-4-N'-methyl-N'-(2' ,3'-dihydroxypropyl)amino benzene with certain 2-nitroparaphenylenediamine direct nitro dyes produces a dye composition in which the dyes can be more concentrated (without crystallizing out) and hence produce darker shades.