Minoxidil Topical Solution USP is a medication primarily used to treat androgenetic alopecia, commonly known as male-pattern baldness or female-pattern hair loss. It is believed that minoxidil may increase blood flow to the hair follicles, which can stimulate hair growth and prolong the growth phase of hair. When applied topically to the scalp, minoxidil solution is usually absorbed into the skin and may help to revitalize hair follicles that have become dormant, leading to increased hair growth and thickening of existing hair. Minoxidil Topical Solution USP is most effective in individuals with early stages of hair loss, particularly in the vertex (crown) area and the front of the scalp.