摘要:
The invention relates to novel heteroaromatic trinuclear direct dyes, to dye compositions containing these dyes and to the process for dyeing keratin fibres using them. In particular, the invention relates to heteroaromatic trinuclear direct dyes comprising a pyridine nucleus. These novel dyes make it possible to obtain black shades that show good fastness and good stability in the dye compositions.
摘要:
The invention relates to the use of novel indole compounds as direct dyes in compositions intended for dyeing keratin materials, and, for example, compositions intended for dyeing human keratin fibers and including the hair, and in cosmetic compositions intended for making up the skin, the nails and the lips, to the dye compositions or make-up compositions comprising them and to the direct dyeing process using them, and processes of manufacturing said novel indole compounds.
摘要:
The invention relates to novel indole compounds, to their use as direct dyes in compositions intended for dyeing keratin materials and for example compositions intended for dyeing human keratin fibers and including the hair, and in cosmetic compositions intended for making up the skin, the nails and the lips, to the dye compositions or make-up compositions comprising them and to the direct dyeing process using them, and processes of manufacturing said novel indole compounds.
摘要:
A composition for dyeing keratinous fibers includes, in a suitable dyeing medium, at least one oxidation dye precursor and at least one coupler of formula (I) ##STR1## wherein R is hydrogen, C.sub.1 -C.sub.4 lower alkyl, C.sub.1 -C.sub.6 monohydroxyalkyl, C.sub.2 -C.sub.6 polyhydroxyalkyl, or alkylcarbonyl where the alkyl groups have one to four carbon atoms, or the acid addition salts thereof. Also disclosed is a method of dyeing hair using the disclosed composition, certain novel meta-aminophenols and the use of the latter as couplers.