"iRestore" Light Therapy Apparatus

Current effective therapies of pattern hiar loss are topical minoxidil and oral finasteride. Finasteride is an inhibitor of type 2 5α-reductase and will cause hypospadias in male infant if taken or touched by pregnant woman. The effect of minoxidil is still known now but the dilation of scalp vessel might improve the progression of pattern hair oss. However, minoxidil is not effective for frontotemporal recession and sometimes cause scalp irritation. Low-level laser therapy (LLLT) a new therapy to treat alopecia. In 2007, LLLT was approved by the FDA as a treatment for hair loss. In some small studies, patients had a decrease in the number of vellus hairs, an increase in the number of terminal hairs, and an increase in shaft diameter. Up to now, however, no longer, placebo-controlled studies have proved its efficacy in this application. According to the mechanism of paradoxical hair growth (PHG), sublethal injury to the hair follicle could stimulate the hair follicle to enter anagen via the release of factors that alter angiogenesis, leading to increased blood flow to the dermal papilla. Furthermore, load inflammation in the papilla nad heat shok response, possibly mediated by HSP27, may play a role in activation of follicular stem cell. This study is a randomized, blinded, self-comparison and superior clinical trial design. In this clinical trial, the investigators try to evaluate the efficacy of low-level laser therapy in treating pattern hair loss. Pattern hair loss is characterized by increased vellus hairs and decreased shaft diameter, and these features are improved by LLLT in previous.