Equate Cleansing Dandruff Pyrithione Zinc Shampoo helps relieve itching, redness and flakes associated with stubborn dandruff. This product is safe to use on even color treated hair. Thanks to our color safe advanced technology this formulation can be used on color treated hair and you will not have to worry about color stripping or fading. Safe to use everyday. For best results leave product on the scalp for 3-5 minutes, then rinse.