To understand how herbal hair loss products work you must first understand the causes of male hair loss. The majority of male hair loss is caused by a build up of dihydrotestosterone (DHT). DHT is actually a by product of the hormone testosterone.
Once DHT levels reach a high enough level in the scalp hair can become fine and coarse. If left untreated, the hair will become increasingly fine and is prone to fall out in greater and greater volumes. This increased hair loss is referred to as androgenetic alopecia, or male pattern baldness.
There are herbal treatments currently available that naturally block DHT production, and some even do so without effecting testosterone levels. Once an herbal supplement begins to block the production of DHT the body begins to filter out excess levels of the hormone. If the levels of DHT in the body can be decreased hair loss can be effectively stopped.