A method of inhibiting copper deposition on hair and facilitating the removal of copper deposited on hair including applying to the hair a bleaching or oxidative dyeing composition comprising a chelant, rinsing the bleaching or oxidative dyeing composition, applying to the hair a rinse-off conditioner composition comprising histidine, rinsing the rinse-off conditioner composition from the hair, applying to the hair a shampoo composition having ethylenediamine-N,N′-disuccinic acid and/or histidine, rinsing the shampoo composition from the hair, applying to the hair a rinse-off conditioner composition comprising histidine, and rinsing the conditioner composition from the hair.