Ive recently been to a salon and had a full head of foils. I asked for an ash colour, which I usually have, but have come home with quite brassy/yellow tones. Usually the hairdresser puts a toner on after rinsing thr highlights out, but didnt this time.
Should I risk getting the stuff off Amazon and using a toner at home? I usually have them in the salon but wonder if its something I could try it myself. I could also do with saving the cash, to be honest 
I was thinking of using the colour charm in T11 and T18 with the developer creme to tone out the yellow.