The most common cause of hair loss is androgenetic alopecia, also known as hereditary hair loss. The average person loses 50-100 hairs a day, and that’s true for people who don’t have matters baldness in their family. The number of hair follicles men have now is the same amount they were born with — it’s hereditary. Rogaine® doesn’t change follicle quantity, but it can revitalize your existing follicles to stimulate more hair growth.