Specially designed massage nodes replicate the feel of human hands – feel completely at ease and relaxed with our amazing head scalp massager. This is a must-have for happy living! Note: 1. Do not use it without authorization if the head has been operated on. 2. Do not use it if the head has skin damage, swelling, inflammation, congestion and other symptoms. 3. Children and pregnant women are forbidden to use this massager. 4.Do not use the massager while driving or riding. 5. Do not hit, fall or use sharp objects to scratch the massager. 6. Please stop using it immediately if you feel unwell during use. 7. Do not use the massager after drinking or when you are unwell.