Grey coverage and lift

[stella1981]

Hi geeks, can anyone help. I've got a client with 50%grey level 4 box colour on ends. She is a natural level 4 but wants 6/73 I use wella. I was planning on mixing 6/0and 6/73 and 9% but worrried about grey

not covering well as it was really thick hair, can someone advise please? Thanks in advance.

 

[vividamnesia]

Are you stripping the box dye lv.4 on the ends first?....
If you find 20vol/6% is not quite covering stubborn coarse white & 30vol/9% a bit of overkill....you can mix @ 1:1, 20vol+30vol(so equal parts) to result a 25vol/7.5%. This will provide enough kick to penetrate the white & not expose underlying pigment in the natural lv.4 hair. If heat processing set on low for 15mins+5mins cool air to finish.

 

[stella1981]

Thanks for replying, no I'm just lifting the roots as hoping to cut alot of old colour out. Sorry if this is a basic question, i just don't feel confident with colour, would the 9%give me coverage with base in the mixture?