So iv got a new client coming to me and would like me to balayage her hair eventually up to a very light blonde!Iv explained this is a process over a few appointments to keep the hair in the best condition ect ect She is currently a base 4 box colour with a 3/4 inch regrow that is her natural base 6,it is very long and very thick iv taken a strand test to see what tones il be working with once lifted but curious to find out how you would all approach the virgin roots with the box ends and trying to do a nice smooth balayage,I would normally if doing foils use 2 different strengths then tone to blend it all together but I’m not sure how I would do this on a balayage as I feel it will be blotchy if I use different strengths! HELP!!!