First of all, let's understand the principle of red and blue light acne:
Red light is actually a red diode, which is limited to the optical band of 625+- 10nm. It has certain functions of diminishing inflammation, promoting fibroblast generation, promoting collagen generation and reducing scar formation, which can minimize the generation of inflammation and ultimately greatly reduce the possibility of acne scar formation.
And blue light, yes, is a blue diode, which is limited to the optical band of 470+- 10nm. Propionibacterium acne, which causes skin inflammation, is an anaerobic bacterium, which produces endogenous porphyrin during metabolism, and blue light can activate it and create a phototoxic environment. The transformed toxic singlet oxygen can quickly kill Propionibacterium acnes and remove acne on the skin, thus achieving the therapeutic purpose.
Therefore, red and blue light acne is effective, and because it is phototherapy, it can be operated on various types of skin, which is safe and has no toxic side effects, and can avoid drug resistance caused by abuse of antibiotics, which is simple and effective.
But as far as my personal experience is concerned, the effect is not as magical as advertised, and it takes several consecutive treatments to see obvious improvement. I think it is more suitable as an active adjuvant therapy, such as medicine+red and blue light irradiation, which costs hundreds of dollars at a time and is not very cost-effective. Friends with good economic conditions recommend it.
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