DHT is known to contribute to both male & female pattern baldness. It binds to scalp hair follicle receptors, causing them to shrink.  Saw palmetto is believed to act by blocking the formation of DHT. It is believed to act in a similar way to the medication finasteride, which is commonly given to men as…

Dihydrotestosterone (DHT) is what testosterone turns into after it is processed by the enzyme called 5-alpha reductase. Most hair loss treatments focus on either inhibiting the enzyme or antagonizing (blocking) the DHT receptors in the scalp.