Infrared (IR) light (wavelength 800nm – 900nm) energy penetrates tissue at a greater depth than the blue and red light. Approximately 50% penetrates to 8cm and decreases to less than 1% at 20cm (NASA study). Infrared energy is known to heat tissue and its effects are well documented for therapeutic pain management. For cosmetic applications, IR stimulates the NaK+ pump which increases cell membrane permeability; facilitating equilibrium of cellular pH, while increasing nutritional absorption and elimination of waste byproducts.
