You can use this for both toning for pre lightened hair and could be used for a virgin head of hair. For a virgin head of hair the Natural level could be a level 5 and or 6.
type fine and/or medium
density thin and/or medium
1/2 10 volume 1/2 20 volume at the new growth
20 volume at the mids & ends
If you pre-lighten to an 8, the NRP is orange.
If the client has some of their natural still left in the hair I would use Deposit Only Color Treatment ...
If they are colored all over and I am toning highlights...I would choose FSP so they tone lasts longer.
20 volume gives you even lift - even deposit.
Big fan of the 20!