Abstract:
The invention provides a process for dyeing keratin materials with anionic dyes (especially acid and mordant dyes) in which the aqueous dye liquor contains the following: (a) an anionic assistant; (b) a product obtained by adding 2-15 moles of propylene or butylene oxide and 0-10 moles of ethylene oxide to 1 mole of an alkylphenol having 6-12 carbon atoms in the alkyl radical or of an aliphatic alcohol having 1-20 carbon atoms. (c) an adduct of 1-2 moles of ethylene oxide with 1 mole of an hydroxy compound of benzene or naphthalene which may bear other nonionic radicals on the aromatic nucleus, the dye liquor being applied at temperatures below the drawing temperature of the dyestuff followed by fixing with steam and/or treatment in a hot acid liquor.