Promotes strong, soft, healthy hair Vitamin and herb formula Helps relieve dry scalp Helps reduce breakage allowing hair to grow longer Helps promote strong, healthy hair. Its unique formula gently cleanses and conditions hair, while it adds strength and returns hair to its natural healthy condition. DOO GRO® Tingling Shampoo moisturizes hair and scalp. Its natural ingredients help control itching associated with dry scalp. Safe to use on hair that is relaxed, curled, natural, dry, overprocessed, breaking or damaged.