It is very difficult to grow hair again because if the hair loss has reached the level of baldness, it is already very serious and it is difficult to achieve the desired effect even if medication is used. When hair loss has reached baldness, you can choose to achieve the purpose of letting hair grow out again by redistributing hair through hair transplantation, or you can choose to use drugs under the guidance of a doctor, such as minoxidil solution, which can be used twice a day to effectively reduce hair loss and stimulate the growth of new hair. This drug is only effective for patients with milder conditions, the effect is very slow after use, and usually takes several months to produce results. If the patient has reached the level of baldness, it is recommended to seek a hair transplant from a professional hospital dermatology department for more obvious results. Baldness has a certain hereditary nature, and physical treatments such as medication and photoelectricity can only delay the progress of its hair loss, and cannot effectively treat baldness.