The main effect of red and blue light is on the surface of the skin, which can play an antibacterial and anti-inflammatory role, inhibit the secretion of oil, reduce the clogging of pores and thus reduce the chance of acne bacillus infection. Red and blue light can also stimulate the skin’s deep tissue, accelerate metabolism, promote the repair of acne marks, and make the skin smooth. If there is not a lot of acne, the main thing is to control the diet, do not eat too greasy food, do not eat chili, fried food, reduce the production of oil skin. It is recommended to eat more green vegetables and foods that reduce fire, such as cucumber, bitter gourd and green beans. If your skin is too oily, you can use a proper oil-removing face wash and apply a topical ointment or anti-inflammatory cream of retinoic acid. If you want your acne to go away quickly, you can use red and blue light to get rid of acne treatment.