At One Dry, Itchy Scalp Shampoo 16oz.At One Dry, Itchy Scalp Shampoo moisturizes the hair and scalp to help counteract dryness that causes itching. Gently cleanses loose flakes, leaving the scalp feeling invigorated and tingling fresh. with Plant Extracts & Moroccan Argan Oil Benefits: Moisturizes the hair and scalp to help counteract dryness that causes itching. Gently cleanses loose flakes, leaving the scalp feeling invigorate and tingling fresh. Features: Contains active ingredient Pyrithione Zinc (a strong anti-dandruff agent).