So how exactly does Low-Level Laser Therapy regrow hair?
Each hair on your head grows in a characteristic cycle with several phases. The hair follicle will first spend several years in the growth phase, during which the hair actively lengthens. Next comes the resting phase, where the hair stops growing for several months. After a few months at rest, the follicle sheds its hair, the cycle begins anew, and the follicle begins to grow new hair.
Red laser light energizes stem cells in the dermal papilla, which resides deep within the hair follicle. As a result, the length of the follicle’s growth phase is increased, and it produces thicker, healthier hair.