milk_shake icy blond holiday duo is a specific duo for blond hair. The special black pigment contained within the new milk_shake icy blond range, gives delicate ash tones to very light blond hair or platinum blond hair. Prolongs the effects of grey or silver tones. It helps to neutralizes and counteracts unwanted yellow or brassy tones in blond hair. The shampoo is ideal for very light blond or platinum blond hair. Not recommended for grey or white hair. Shampoo is SLES & Paraben free and the conditioner is Paraben free.