Infrared light penetrates more than red light and can better reach the dermis where fibroblasts (collagen and elastin producing cells) and collagen structures are found. High-power LED phototherapy in the near infrared wavelength boosts mitochondrial function via the stimulation of cytochrome C oxidase enzyme. Improved mitochondrial function means better fibroblast function and increased collagen and elastin synthesis, meaning firmer skin. No other procedure is known to have this effect on mitochondrial function - only red light at around 630nm and infrared light at around 830nm. However, this effect is subtle and appears gradually and slowly, so infrared…