Featuring a new and improved formula developed by world-class dermatologists with clinically proven active ingredients, Dandrene is a medicated shampoo that works on contact. It is formulated to relieve and help prevent scalp itching, irritation, redness and flaking caused by dandruff, psoriasis and seborrheic dermatitis. This advanced formula provides immediate relief from the first use and maintains efficacy for hours, even after rinsing. First and foremost, Ds Laboratories is a technology company aggressively focused on innovation. All their products have active pharmaceutical ingredients that help ensure the best quality and provide high added value in the care of hair problems.