Low-Level Laser Therapy (LLLT) for hair loss is a well-established treatment, supported by decades of scientific research. Its effectiveness was first observed in 1967 by Hungarian scientist Endre Mester, who noticed improved wound healing and hair regrowth in mice exposed to red laser light, even though his initial goal was to treat tumors. This accidental discovery laid the foundation for LLLT as a safe and effective option for promoting hair growth.
Low-Level Laser Therapy is also known by other terminology including photo-biomodulation therapy or cold laser therapy, was found to have unique biological effects, including pain relief, wound healing, and tissue regeneration. LLLT works because certain molecules in our cells, especially the enzyme cytochrome-c-oxidase in mitochondria, absorb red light and convert it into usable energy. This process boosts cellular respiration, helping cells produce energy more efficiently, similar to how plants use sunlight for growth.
Laser therapy for hair loss works by influencing the hair growth cycle, as discussed on our Hair Loss 101 page. Normally, each hair follicle alternates between a long growth phase and a shorter resting phase before shedding the hair and starting a new cycle. In androgenic alopecia, hair follicles gradually shrink, causing the growth phase to shorten with each cycle. This leads to progressively thinner and shorter hairs—a process known as miniaturization.
The Hair Cycle
LLLT slows or sometimes reverses hair follicle miniaturization by energizing stem cells in the dermal papilla when exposed to red laser light. This boosts cellular respiration and metabolic efficiency, helping follicles stay longer in the growth phase. As a result, hair thinning and balding slow down or improve, and increased blood flow delivers essential nutrients to the follicles.
LLLT is an FDA-cleared treatment for pattern hair loss in both men and women, alongside minoxidil and finasteride for men, and minoxidil for women. Numerous clinical studies confirm its effectiveness and excellent safety profile, with no serious side effects1. LLLT can be used by anyone and complements other medical and surgical hair loss treatments, such as minoxidil, finasteride, platelet-rich plasma, and hair transplant surgery.
For these reasons, LLLT—especially The Original LaserCap—is recommended for all individuals experiencing hair loss!
1Liu K-H, Liu D, Chen Y-T, Chin S-Y. Comparative effectiveness of low-level laser therapy for adult androgenic alopecia: a system review and meta-analysis of randomized controlled trials. Lasers Med Sci. 2019;34(6):1063-1069.
