Red light therapy, also called photobiomodulation therapy, is the application of red and near-infrared light at specific wavelengths to improve blood flow and cellular energy production in a clinical setting. Red light therapy helps mitigate the potentially harmful effects of oxidative stress by stimulating the body's own protective metabolic processes. Wrinkles and more serious diseases like diabetes and cancer have both been linked to oxidative stress, also known as an increase in free radicals in the body. Red light therapy stimulates the body's endogenous antioxidant defense mechanisms, reducing free radical damage.