Regular exfoliation can help remove dead skin cells, residue and unclog pores. Neutrogena Healthy Scalp Hydro Boost Scalp Scrub with Hyaluronic Acid, a hydrator naturally found in the skin that attracts moisture and locks it in, removes residue while also quenching dry scalp and strands for long-lasting hydration. Hydrating and pH balanced, this scrub helps gently remove impurities, product and oil build-up to leave your scalp and hair looking and feeling its best.