No hair can be treated by medicine, diet and hair transplant. There are various reasons for no hair, such as endocrine influence, nutritional deficiency, seborrheic dermatitis, it is best to go to the hospital for a systematic examination, you can do a hormone test, when androgen secretion is too strong, it is easy to cause hair not to grow, you can use drugs to regulate. Because hair growth also needs a lot of nutrients, to strengthen nutrition, do not picky food, eat more high-protein food, eat more fresh vegetables and fruits. People with seborrheic dermatitis should eat less greasy food and food that is too sweet. Baldness is more serious will affect a person’s image, you can consider hair transplantation, the current maturity of this surgery has been very high, it is recommended to go to a regular hospital for treatment.