I am a new salon geek and need some wella colour advice.
On the secondary number scale ie 9/60 when do the colours enhance and when correct tones. also, I am doing a ladies colour on tues. she is a base 7 with 50 % dark grey at the back and a pure white on the top. She has it coloured to a 12/0 all over. I would like to add some lowlights and a blonde. Please advise on colours you would recommend. Please help