Goldwell Dualsenses Color, 12x18 ml, Hair Serums for Women, Have beautiful hair from roots to tips. The hair serum Goldwell Dualsenses Color takes perfect care of your hair and breathes new life into it. Characteristics: restores the natural shine of the hair smooths the surface of your hair How to use: Apply while hair is still damp. Do not rinse. Afterwards, style your hair as usual.