Minoxidil tincture can usually be used for a long period of time. Minoxidil tincture is a vasodilator medication, and the medication works topically to stimulate hair growth in people suffering from hair loss. It is mainly used to treat male pattern baldness and spot baldness. Usually use 3 months for a course of treatment, according to the recovery situation to decide whether to repeat the treatment. Minoxidil tincture adverse reactions are rare, if headache, fainting, chest tightness or facial hair growth and other uncomfortable symptoms occur during the use of the drug, you should immediately stop the drug to the hospital. Allergic to any component of the drug is prohibited. Minoxidil tincture medication needs to be used under the guidance of a doctor, if the need for medication, it is recommended that the former often dermatology consultation, not blindly self-medication.