Minoxidil, mainly refers to minoxidil tincture, the drug is not able to make hair thicker. Minoxidil tincture is more commonly used as a topical drug, the main ingredient is minoxidil, belonging to a kind of local vasodilator, local topical application can stimulate local hair regeneration, so in the clinic is often used for the treatment of many causes of hair loss, such as seborrheic alopecia, baldness and so on. Minoxidil tincture mainly stimulates the growth of hair, and does not affect the structure of hair, and will not lead to hair thickening or color change. Adverse effects of minoxidil tincture include localized skin erythema, burning and tingling, and hair loss may worsen during use. It is contraindicated in case of allergy to minoxidil or any of the other ingredients. It is important to note that the drug should only be used on the scalp area and should not be taken orally or applied to other areas of the body. In order to achieve the best therapeutic results from the medication, it is important to use the medication in strict compliance with the doctor’s instructions.