Defense Zone Pre-Shampoo Exfoliant helps to clarify the scalp and remove deposits. Defense Zone Pre-Shampoo Exfoliant helps you take serious care of your scalp and hair with a comprehensive system of products designed especially to address the symptoms of dandruff. The unique step system attacks both scalp issues such as dryness, flaking, and itchiness while also delivering hydration and smoothing to hair for a shiny, healthy appearance.