It was used by native Americans who, it is thought, used it to help revive hair follicles as well as make the scalp less sensitive to stress and irritation long considered a contributor to hair loss. It can also help with other causes of hair loss such as certain pathological conditions and generally help with alopecia. Saw Palmetto is composed of bioactive ingredients that are lipophilic. This means that they can be extracted into an oil and are easily absorbed by the skin. This can be directly applied to the area which requires treatment. Although it is not entirely understood, it is believed that Saw Palmetto blocks a key enzyme which allows the male hormone testosterone from being converted into ‘dihydrotestosterone‘ (DHT). This hormone is considered to be one of the major contributors to hair loss.