Pore clogging is formed due to the following reasons: 1, oil secretion: a large amount of oil can not be discharged through the pores, part of the residue in the pores and the formation of pore clogging. 2, dry skin: usually do not pay attention to the facial maintenance, so that the skin is in a long-term dry, dehydrated state, in order to make the skin become moist, the skin itself will secrete more oil to moisturize the skin, which leads to pore clogging. 3, stratum corneum metabolism Slow: aging keratin accumulates on the skin, making the pores clogged, uneven skin color, rough symptoms, regular use of exfoliating products can be improved. 4, women heavy makeup: but can not wash the face of the cosmetic products, in the long run cosmetics will enter the pores to form pore clogging, the use of abrasive cleansing milk, make-up remover with make-up remover will be a deep wash of pores, you can prevent the emergence of this situation. The situation can be prevented by using a scrubby cleanser and using makeup remover to clean the pores deeply.