ProBeauty Essentials Shampoo & Scalp Brush is specifically designed with silicone bristles to give you an invigorating scalp massage. This scrubber helps work in your favorite shampoo or treatment to give your scalp a deeper, closer wash. DIRECTIONS: Hold the massager in the palm of the hand, gently massage bristles onto the scalp with desired pressure. Can be used on dry or wet hair, with or without product and in or out of the shower. CAUTION: Do not massage in large circular motions as hair will tangle.