| abstract |
The invention relates to the dyeing of keratin fibres using colourless or light-coloured styryl- or imine-type disulfide/thiol compounds which are coloured using stimuli. More specifically, the invention relates to a method for dyeing keratin materials, particularly human keratin fibres, such as hair, using a dyeing composition containing at least one styryl- or imine-type disulfide/thiol compound. The invention also relates to a suitable device for carrying out said method. The invention can be used, in particular, to provide keratin fibres with a long-lasting chromatic colour that can even be seen on dark hair without prior lightening. The invention can also be used to obtain a colour which, under certain conditions, does not stain. |