Trust your beautiful blonde hair to the best shampoo and conditioner in the Amika Bust Your Brass Cool Blonde Shampoo 10 oz and; Conditioner 8.45 oz Combo Pack. Blondes can?t have more fun when unnatural, brassy tones are cramping your style. Fight the brass with the violet-pigmented shampoo and conditioner. Work the shampoo into your hair from the roots to the ends and let product sit before rinsing. Follow up with the conditioner from mid-length to ends. Let conditioner sit and rinse completely. Your results will depend on the porosity of your hair and the time you let the products soak.