The Hair Growth Research Division focuses on Low-Level Laser Therapy (LLLT) and specialized LED wavelengths designed to combat androgenetic alopecia and thinning. We analyze the efficacy of medical-grade laser diodes and clinical-strength LEDs in stimulating hair follicles at the cellular level. Our reviews cover the spectrum of scalp-focused tech, from FDA-cleared helmets to handheld stimulation devices, focusing on diode count, scalp coverage, and long-term hair density results.