I have a client that wants slate grey. She has bleach on the scalp so we have enough lift its just finding the right colour/toner. We've tried silver/ ashey toners but its not got the depth we want.
Ive attached a pic that shes sent me to what she wants to achieve
Why not use a few cm of a Black hair color mixed with an ash blond? Comes out really slate!
For loreal use richesse 9.11 (27g) with 1.0 (3g) and 6 vol.
Snip off a tiny section underneath and strand test to your fav grey!
When I went to the wholesalers last time because I bought so many tubes of colour touch I got 2 free tubes and one of them was 7/89 , iv just done a test on a piece of platinum blonde extensions and it's a really nice grey colour
1/2 7a 1/4 6sb 1/4 pmix Goldwell colourance on prelightened hair. This is my colour had it for years! If it comes up ANY gold, tone it out with 9na first then go in with that formula. Or another good grey is elumen 20g ab@9 10g clear 4-5g na@2 might need two applications to get really even. If ends are porous drop the na@2 to maybe 2-3gms
Hope this helps