Complete with four massage heads, 21 individual massage nodes, two speed settings, and two kneading options, this FEBFOXS chargeable scalp massager is designed to imitate human fingers, giving you a relaxing massage. While electric, it is IPX7 waterproof so you can take it with you in the shower. The soft silicone heads are designed to prevent tugging, pulling, and tangles. When using it on wet hair, we recommend starting on the lowest setting and gradually increasing the speed to avoid any potential tangling. You can also use this head massager on dry hair to promote hair growth & blood circulation, and relieve tension. Cordless and reachable making it good for travel, and the electric massager can be used on other parts of your body, including your neck, back and any other area that may need some stress relief.