Hair loss affects both men and women and now thereâ??s a solution that uses the latest technology to stimulate hair growth. Itâ??s a machine that uses a low-level laser, which is a cold laser treatment so clients wonâ??t feel anything on their scalps.   While the treatment has recently entered the mainstream market, the technology has been available since 1964. Originally used for wound healing, technicians noticed that hair was thicker and growing faster around the area where the wound was being treated.