Diane Processing Caps come as a pack of 100 disposable plastic caps for use at salons or at home. Made from durable clear plastic, these hair caps keep wet or dry hair in place for a variety of treatments, including conditioning, perms, and dye jobs and can even be used as a shower cap. The extra large size stretches to fit large or small heads with every kind of hair long or short, straight or curly, thick or thin.