TressTech™️ Dry Spray Shampoo is a revolutionary new product that helps to keep your wig looking and feeling fresh between washes. It is a lightweight, invisible spray absorbs oil and dirt, and helps detangle and add volume to your wig. Perfect for any wig or extension. TressTech Dry Spray Shampoo is safe to use on all types of hair, including synthetic and human hair and is free of talc, alcohol, and other harsh ingredients.