In the same way that plants use chlorophyll to convert sunlight into plant tissue, high intensity light emitting diodes (LEDs) utilizing specific, proven wavelengths of light can trigger a natural biostimulatory effect in human tissue. Research has shown that phototherapy can increase circulation, accelerate tissue repair, kill acne bacteria, decrease inflammation, improve skin tone, texture and clarity, as well as ease muscle and joint pain, stiffness, spasm, and arthritis.