Just for men shampoo in hair colorant actually blends shades of your natural colour back into the grey so subtly your cant tell which hair used to be grey and it works so quickly so gently it doesnt strip out or change your natural colour like most leading hair colouring products do its unique natural look formula actually targets grey hair and blends in several close but slightly different shades that match the rest of your hair grey is simply blended away even you cant tell wher