Skin Metabolize ring is located at the most outside of iris, it is the 7th ring.Skin Metabolize ring is the most outside ring of iris, the color varies from dark to light, and it is a circle pointed to the center. When the skin metabolize ring comes out, it means the decline of skin, there are always acne, pox spots, rashes or even psoriasis and allergic and son on in epidermis. And the toxic in the skin is distributed equally, according to the color and width we can judge and level of toxic stockpile, and different dedication.