Girls who have less and less hair may be caused by androgenetic alopecia, baldness, ringworm and other diseases, patients can improve their condition through general treatment, medication and other ways. 1. Androgenetic alopecia: patients can use some oil control, anti-androgenic topical drugs, such as ketoconazole lotion, etc., but also can use 5% minoxidil for treatment to improve hair loss, low hair volume and other symptoms. 2. Patch baldness: girls with less and less hair may also be caused by patch baldness, patients can follow the doctor’s instructions to use topical medications, such as glucocorticoid ointment, minoxidil, dithranol and other topical treatments, to improve the loss of hair and other conditions. 3. Tinea capitis: Tinea capitis may also lead to hair loss in girls, patients should boil and disinfect used household items and barber tools, patients can follow the doctor’s instructions to use antifungal drugs, such as clotrimazole ointment, terbinafine ointment, etc., local treatment, but also oral itraconazole, fluconazole, etc., systemic treatment to improve the condition. In addition, postpartum hair loss, endocrine disorders, malnutrition, improper use of medication may also cause less and less hair. All of the above drugs should be used under the guidance of a doctor. It is recommended that the patient consult a doctor for examination to clarify the cause of the disease and then carry out targeted treatment, pay attention to personal hygiene in life, and avoid excessive scratching of the scalp with the hands.