To grow hair fast, you can start from the following aspects: First, treat existing hair diseases, such as baldness and seborrheic alopecia. Thick hair is a sign of health, and hair loss is one of the manifestations of some diseases. If you have a hair disease yourself, it is unrealistic to let your hair grow quickly. Topical minoxidil application, oral compound glycyrrhizin tablets, etc. have therapeutic effect on the above diseases, the specific diagnosis and medication is more complicated, we suggest a face-to-face consultation. Second, a reasonable diet, hair growth needs rich raw materials, especially milk, eggs and other high protein food, but also fresh fruits and vegetables to provide vitamins and so on. Third, we should massage the scalp and comb the hair frequently to promote blood circulation. Fourth, avoid staying up late, to ensure adequate rest.