bust your brass cool blonde conditioner Keep blonde hair light, bright and soft with this violet-pigmented conditioner, formulated to zap brass. benefits Ultra-violet formula counteracts harsh brassy tones. Brings out color, shine, and softness in all shades of natural and color-treated hair. Keratin Protein repairs and restores, while providing deep nourishment, softness, and shine. Shea Butter provides deep nourishment, softness and shine.