Question: how soon can you use toner on your hair?
Answer: You'd apply the mixture for at least 15-30 minutes and then rinse out. Obviously, you should apply it after bleaching. But when is best? If you go to the store and buy yourself a toner, say, Wella's Color Charm in Lightest Ash Blonde, you'd really have to wait until your hair is lifted to a very light tone of yellow.