| abstract |
The invention relates to a direct dyeing (or dyeing) process for keratin fibers, characterized in that it consists in bringing into contact, keratin fibers to which a composition containing at least one direct dye chosen from derivatives has been applied 2-nitroparaphenylenediamine and / or nitro derivatives of particular aminophenols, with a gas containing water vapor, the temperature of said gas being greater than 75 ° C, the contact time between said gas and said fibers to be colored less than two minutes.n n n According to the invention, the hair is colored uniformly over the whole of the hair, from the roots to the ends, and this regardless of the condition of the hair. |