I finally started using a spray bottle for my toners and my foils stopped bleeding
Had a client last week who wanted a lived-in blonde and my usual bowl and brush was dripping down her neck, so I mixed the toner in a little spray bottle I got for 3 bucks at Sally and misted it on instead, and honestly I could see exactly where it was landing so much better that I want to know what else I have been doing the hard way all these years.