For second-degree hair loss due to kidney deficiency, it should be determined based on pathology. After the kidney deficiency is cured, the hair can grow back. If the kidney deficiency is not serious, the hair loss can heal itself. Always pay attention to regular eating habits, rest well, avoid overworking, and do not be too stressed. You can choose traditional Chinese medicine treatments and use medication based on the doctor’s advice to achieve the effect of nourishing the kidneys. Eat more fruits and vegetables, abstain from sexual activity for the time being, and consume foods high in melanin such as black sesame seeds, Polygonum multiflorum, and black beans.