Since I used to work at a medical aesthetics clinics, I learned that red light has can eliminate inflammation and help ur skin on anti-aging as well. The special colored lighting can also stimulate the activity of fibroblasts and promote the regeneration of collagen and elastin. Long story short, it accelerates cell metabolism and blood circulation of capillaries, reduces freckles, accelerates the improvement of problem skin and the repair of skin after sunburn. It handy, last long as comparing to other brands. What i like the most is the little heat and vibration when it is activated, it helps my pore open and better absorbing the serum and suff. just keep in mind that it do need a little moisture to function continually.