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This is a product description for CVS Pharmacy's medicated shampoo with a combination of natural extracts and essential oils that contains 3% salicylic acid to stop intense scalp itch and control crusty scalp build-up. It is a non-greasy formula that can be used to relieve psoriasis symptoms. The shampoo and conditioner should be used at least twice a week for best results. The directions necessitate a thorough rinsing of hair after a liberal amount of shampoo has been massaged into the scalp.*