One of the hardest kinds of baldness to treat is frontal baldness. This is because this form of hair loss results from a genetic sensitivity in some people to the effects of the compound DHT which is formed from testosterone. Frontal hairs seem much more succeptible to the effects of DHT and if the person has elevated levels of this hormone then frontal baldness can result. There is some evidence that the combined use of Propecia and Rogaine may slow or revers frontal baldness in some, but not all men. For more on the subject of frontal hair loss and how it may be prevented see the following article: