Hello, my friend wants to dye her hair from red back to brown but obviously needs to neutrilise the red.
Basically wanted to know the ratio of wella koleston special mix 0/28 and wella 4/0?
With 30ml of 4/0 how much special mix do I use to neutralise out the red?
Thank you x
Basically wanted to know the ratio of wella koleston special mix 0/28 and wella 4/0?
With 30ml of 4/0 how much special mix do I use to neutralise out the red?
Thank you x