Hair loss can be caused by genetics, stress, or hormonal changes. For hereditary hair loss (male-pattern baldness), the two most effective, FDA-approved medications are Minoxidil and Finasteride. Minoxidil is an over-the-counter topical treatment applied to the scalp to stimulate hair growth. Finasteride is a prescription-only daily pill that helps prevent further hair loss by blocking the hormone responsible for shrinking hair follicles. Because hair loss treatments depend heavily on the underlying cause, and because these medications can have side effects, I highly recommend consulting a dermatologist for a proper diagnosis and personalized treatment plan before starting any medication.