The instrument has three light sources: red, yellow and orange. Patented red light can promote skin collagen regeneration, yellow light inhibits melanin formation, and orange light brightens skin tone and tightens skin. After using it for about 4 weeks, I can feel that the skin around my eyes is much tighter, and the crow's feet are much faded when I smile. Of course, after using Chuangying phototherapy eye beauty instrument, it can also be used with skin care products such as eye cream, and the effect is better. It has a slight heat sensation when worn on eyes, and is non-irritating and harmless to the skin, safe and comfortable to use.