| 摘要 |
New dyeing compositions, containing improved levelling agents, for dyeing of keratinous fibres, especially human hair, making more uniform the colour of the dyed fibres, are provided. The compositions contain one or more compound s of the formulae (I) and/or (II), wherein R is an alkyl group or alkenyl grou p having 6 to 24 carbon atoms; R', R'' and R''' are independently a hydrogen atom or an alkyl group having 1 to 5 carbon atoms which is optionally hydroxylated; m has a value in the range of 4 to 10; n has a value in the range of 0 to 10; and p has a value in the range of 1 to 10, with the provis o that when p = 1, at least one of R', R'' and R''' is not a hydrogen atom.</S DOAB>
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