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  1. M

    Wella Koleston and Welloxon ratios

    Hi, home dye job coming up and my hairdresser is sick with corona so I don’t want to bother her! I have Wella Koleston 6/00 and Welloxon Perfect 6% 20 vol. is it 2 parts developer to 1 part colour, equal amounts? I don’t have a measuring tube. Does weight work with kitchen scales? I have...