Minoxidil comes in different dosage forms, all of which are applied topically and externally to the affected area of the scalp. Minoxidil includes spray, application, gel, tincture and other dosage forms, all of which are for topical application. Spray, application and tincture are 1ml each time, and gel is 1g each time, which is applied from the center of the affected area of the head and massaged with the hands for 3~5 minutes. Twice a day, excessive use does not increase efficacy and should be used consistently. The use of minoxidil are required under the guidance of medical professionals, common adverse reactions are mild dermatitis of the scalp, allergic to minoxidil is prohibited, children, pregnant women, lactating women and elderly people over the age of 65 years old to use minoxidil with caution.