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Researchers believe that minoxidil and finasteride open the blood supply to hair follicles, stimulating hair growth, and slowing down hair loss.
49:32 - 53:14 (03:41)
Summary
Researchers believe that minoxidil and finasteride open the blood supply to hair follicles, stimulating hair growth, and slowing down hair loss. However, both treatments must be used for as long as hair retention is desired.