Are Topical DHT Blockers as Effective as Oral Finasteride at Preventing Baldness?
What's more effective at fighting hair loss - decreasing serum levels of DHT with oral finasteride, or lowering DHT on my scalp with topical finasteride?
Clinical studies have proven that oral finasteride is better than topical finasteride at combating hair loss. Decreasing the amount of DHT circulating in your blood helps prevent miniaturization of your hair follicles. Topical finasteride has not been shown to be effective and virtually all hair loss doctors will recommend a combination of oral finasteride (Propecia) and topical minoxidil (Rogaine). Dutasteride is another drug that blocks more forms of DHT than finasteride and has been shown in clinical studies to work better, but also comes with a higher incidence of side effects.