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Finasteride works by stopping the male hormone testosterone from being converted into DHT forms that cause hair follicles to shrink. When Finasteride is activated, hair follicles should be able to go on naturally producing hair like before. Although women do carry the male hormone testosterone, taking
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Finasteride has been found to cause major birth defects, and is not a recommended course of treatment for premenopausal women. Shapiro MD offers hair loss treatment tailored for women.