[header] How to whiten yellow hair [title] Use a toner after bleaching. [step] Dark hair often ends up with orange or yellow tones after bleaching. The right toner will cancel out these brassy tones and makes your hair closer to white or platinum blonde. 
[title] Find purple toner in a drugstore or beauty supply store. [step] Just about any pharmacy should carry toner, and you might even find it in the hair product aisle of a supermarket.