1, the effect of Odin red and blue light therapeutic instrument is to regulate skin inflammation and improve skin metabolism. Red and blue light irradiation can accelerate skin metabolism, promote the absorption of inflammation, relieve local redness and pain symptoms, and improve roughness or dullness in conditioning stage. Red and blue light therapeutic apparatus can be divided into red light and blue light. Red light with longer wavelength can penetrate deep into skin tissue, kill Propionibacterium acne to some extent, and promote the regeneration of collagen fibers, cell growth and skin repair. Blue light has shorter wavelength and shallower penetration depth than red light, which can stimulate the local area, thus making the inflammatory cells dissipate faster, promoting local blood circulation better, and achieving the effect of strengthening local repair.