申请人:Pasquier Cecile
公开号:US20070245501A1
公开(公告)日:2007-10-25
The present invention relates to agents for coloring keratin fibers which comprise at least one zwitterionic azomethine dye of the general formula (I), (II), or (III)
in which z is a heterocycle of the formula
in which R8 is an alkyl sulfonate radical of the formula (XIII);