Palmer's Olive Oil Formula Anti Dandruff Scalp Scrub Shampoo is formulated with tiny, natural exfoliating particles that gently scrub the scalp to exfoliate dead skin cells that can result in flaking. Jamaican Black Castor Oil has a strong lipid content which helps relieve dry itchy scalp while protecting hair from styling damage. Cooling mint extract purifies and stimulates the scalp for an ultra-clean refreshing feel.