Low level laser therapy uses a specific type of laser in order to stimulate hair follicles and induce hair to grow back thicker and fuller. This is also sometimes referred to as “cold therapy” as these lasers do not heat the target tissue like the other lasers that are used for removing pigmentation, which cut and remodel tissue. One of the large benefits of LLLT is that it is non-invasive, not requiring any scalpels or burning.