You can but I won't do much. I just re bleached my hair after using drugstore colo rista bleach which was 30v turned my hair orange from a dark brown. I re bleached it with ion lighting powder and ion 20v developer for the max time 50 mins and then toned it with the Wella t18 for 30 minutes.
Can you use a 10 developer with Wella toner?
Wella Colour Charm Toners are designed to be mixed with 20 Vol Developer, but will also work with 10 Vol Developer - the choice is yours! ... This is great for light blonde hair, hair that has been just lightened, or for using the toners to fix brassiness (yellow and orange tones).2020-01-06
Should I use a 10 or 20 developer with toner?
Only use 10 Vol developer if you have really lifted well and you are confident that there is minimal yellow left. Otherwise, use with 20 Vol developer for best results. You will get better release of yellow pigments and better toning that way.