Your scalp savior outside of the shower. Our Restoring Serum is best for those with oily scalps, more severe flaking or wash their hair less frequently. Apply this medicated leave-in (active ingredient Zinc Pyrithione) directly to the scalp in between washes to relieve and control itching, flaking, and redness. To complete the cleanse-control-condition trifecta, grab The "Triple Threat" Set.