Will 20 volume developer lighten hair by itself?
It can have a lightening effect on natural, undyed hair of 1 or 2 shades when used with permanent colour. When mixed with bleach powder, 20 volume developer ...
It can have a lightening effect on natural, undyed hair of 1 or 2 shades when used with permanent colour. When mixed with bleach powder, 20 volume developer ...
