Low-Level Laser Therapy: Does It Work?

The document reviewed the effectiveness of low-level laser therapy (LLLT) in treating male and female pattern hair loss, citing five randomized controlled trials that showed significant hair regrowth compared to sham treatments. The largest study included 188 participants and reported a significant increase in terminal hair density. However, the review suggested that LLLT should be used as an adjunct or alternative to conventional treatments, as there were no comparisons with established drugs like minoxidil or finasteride. It also discussed potential mechanisms of action for LLLT, such as the stimulation of cytochrome C oxidase and growth factors. The conclusion indicated that while LLLT appears to promote hair growth, its effectiveness needs further investigation to be definitively established.