Minoxidil can treat hair loss in youths who stay up late, but it is recommended that lifestyle changes be made first, not necessarily the use of medication. Minoxidil is a peripheral vasodilator, and when used topically over a long period of time, it can stimulate hair growth in patients with patchy baldness and male pattern baldness. It can also be used to treat hair loss in teenagers who stay up late at night. Its common adverse reaction is mild inflammation of the scalp, and it is contraindicated in patients who are allergic to this product. For hair loss caused by teenagers staying up all night, it is recommended to first change lifestyle habits, regular work and rest and diet. If hair loss does not improve after a long period of regular life, you can consider using medication to treat it, and should not blindly self-medicate.