There are many reasons for low hair, which are usually difficult to adjust simply through diet, and the causes include physiological factors, seborrheic alopecia, baldness and so on. The causes include physiological factors, seborrheic alopecia, baldness, etc. They can be improved by general treatment, Minoxidil application and other medications. 1. Physiological hair loss: Hair growth has a resting period and a growth period, etc. In some specific periods, hair loss will be concentrated, resulting in the phenomenon of hair loss. Generally speaking, it can improve by itself after a period of time. At the same time, due to certain genetic factors, some people appear to have less hair, generally do not need to deal with. 2. Seborrheic alopecia: usually due to endocrine disorders that lead to excessive secretion of androgen, hair oil secretion increases, hair loss increases, and hair loss is low, which can be improved by using topical application of minoxidil. 3. Patch baldness: due to fungal infections and other factors, hair loss can occur in patches, forming a clear border of hair loss patches, at this time you can use hydrocortisone cream and other topical application, combined with ketoconazole and other anti-infective to improve. There are other reasons for hair loss, so it is recommended that you seek medical advice to identify the cause of the problem and treat it accordingly. The above medication should be used in accordance with the doctor’s instructions.