Story at-a-glance Photobiomodulation therapy utilizes specific light wavelengths — including 660 nanometers (nm), 850 nm and 1,050 nm — to stimulate biological processes, each offering unique tissue penetration and therapeutic benefits The optical window (600 to 1,100 nm) allows effective light penetration into tissues by avoiding absorption from hemoglobin, melanin and water, optimizing PBM efficacy Red light at 660 nm enhances skin health, collagen production and wound healing, reduces neuropathic pain and boosts cellular energy (ATP), ideal for dermatology and wound-healing applications Near-infrared light at 850 nm penetrates deeper, aiding muscle recovery and pain management, reducing inflammation and improving skin complexion, suitable for sports medicine and rehabilitation Light at 1,050 nm reaches deep tissues and brain structures, supporting cognitive function, brain health, ophthalmic uses, stroke recovery and detoxification processes