OLAPLEX TREATMENT WITH COLOURHOW DOES IT WORK?Olaplex no 1 and 2 can be used with all hair colours Ð meaning that next time you are visiting your hairdresser to get your hair colour done (it doesnÕt matter what colour you are going for) you must ask for olaplex treatment. Olaplex nr 1 is mixed with a hair die and then applied to your hair. That mixture is left to develop with the colour. After the designated hair colour is developed and washed off olaplex no 2 is applied and left for 20 min. The hair is shampooed and a hydrating mask is applied.You really have to believe me when I say that the difference is unbelievable! I am bleach blonde myself and my natural hair colour is really dark, therefore my hair dye process requires use if bleach. As we all know bleach is doing no good to your hair. In fact in a long run bleaching your hair can lead to dryness and breakage. I do get Olaplex mixed with my hair colour every single time I get my colour done and I can not imagine getting my hair colour done without it now!