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in humans Ketoconazole has also been shown to inhibit the binding of 5 -reductase to sex hormone globulins. All these clinical studies therefore suggest that Ketoconazole may inhibit the production of DHT just like Finasteride. In fact, the effect of Ketoconazole may be two fold, as it has been shown additionally to bind to human androgen receptor, having a distinct advantage over Finasteride. Therefore these authors believe that Ketoconazole inhibits the pathway that leads to the characteristic miniaturization of hair follicles in androgenetic alopecia by inhibiting DHT and/or inhibiting the binding of DHT to AR.