My client currently has a balayage/ombré look,she's asked me to just add some more lighter pieces throughout the hair as her base colour has lasted well.shes also asked me to brighten up her blonde ends,which is best to do as don't want to damage condition of her hair by overlapping more bleach,should I just do a bleach bath,or use blondor and pastel or even blondor with 1.9% or just use a toner on ends?many thanks