Hey Guys im quite new to this. I have a colour issue which I'm unsure about and was hoping someone would help me. My client has a natural depth of 4/0 and uses wella koleston perfect to retouch and cover her greys and takes the colour to her mind lengths. She now wants a full head application and colour it to a 6/0. I was thinking high lift tint using wella special blonde 12/0? Any advise?