When hair loss occurs due to kidney deficiency, normally, hair will regrow after the kidney deficiency is treated. However, in severe cases of kidney deficiency where hair loss occurs, some patients may not experience regrowth, so results can vary from person to person. During treatment, it can be beneficial to consume foods like black sesame seeds, walnuts, and black beans, which can effectively promote hair development and provide relief. It is crucial to treat kidney deficiency promptly to prevent exacerbating the condition, making it more difficult to cure. It is also important to avoid staying up late regularly.