This therapy delivers low-energy light to your scalp without invasive measures like injection or medication. The goal is stimulating activity around follicles and encouraging the growth cycle. It is also called Photobiomodulation Therapy. A review found increased hair density versus sham devices in adults with Androgenetic Alopecia.
There's an increasingly popular option for people dealing with hair loss. It's low-level laser therapy (LLLT) and uses gentle light through a diode-coated hat you put on your head. Before buying a new device, however, you must understand its intended use and how to apply it properly.