A common cause of enlarged pores: 1. natural oily skin due to genetics, diet and many other factors, sebaceous glands secretion, excess oil accumulation in the hair follicles, swelling pores, slowly will look pores. 2. keratin accumulation skin metabolism is not smooth, old keratin can not be shed as scheduled, thick keratin accumulation around the pores, pores become rough, but also easy to be blocked, leading to the formation of Blackheads, whiteheads and pimples are gradually enlarged inside the pores. Skin aging is usually more than 25 years old, pores will gradually appear sagging, coarse problems, coupled with external environmental pollution, the dermis within the elastic fibers, collagen began to loosen, broken. Pores that have lost their surrounding support take on an oval shape of enlarged pores. This situation is most likely to occur in the cheek area near the hairline.4. Dry and dehydrated skin surface is dehydrated, the stratum corneum will have a dry and rough appearance, and the pores will become more visible.5. Lifestyle habits affect smoking, drinking, squeezing acne, improper use of skin care products, and excessive use of face masks, which cause pore blockage, are also possible causes of enlarged pores. The first of these is to make sure that the skin is not too large and that the pores are not too large. 3. Medical grade hydration + moisturizing: give the skin sufficient moisture and long-lasting moisturizing, so that the skin water and oil balance, into a normal metabolic state.