Hi ! I've currently got quite a build up 55/64 + 5 6% on my hair, 70% white base 6 ish, I really want to go lighter, I've never used a colour remover before, I've only ever done bleach baths..... Anyway, has anyone any idea what colour I might he left so I can have a colour ready to go back on, I'm looking at something like a level 7.. Red/copper