Hi geeks I used blondi Rae on a client 4 weeks ago she had black hair it lifted to about a base 5 looked slightly coppery she liked the colour so I just put some bleach with 6% through in foils she's now got abit if root coming through and wants to book in for her colour done in the next two weeks she want to keep the base 5 inbetween with the highlights but will it be ok to just put a base 5 on or do I still need to do two shades lighter like when you first do blondi Rae? Xx