Type.1 Cause pores expand
Excessive sebum secretion, UV exposure over a long period of time, the elastic and collagen fibers due to reduced skin elasticity due to aging is modified.
Type.2 Excessive sebum secretion
When to drain excess sebum in sebaceous glands and pores increases sebum causing a failure in the process of passing through the pores, the pores will increase.
Type.3 Skin aging
Density and elasticity decreases with age, and the border of the pores under the influence of gravity also increases as the pores appear prominently.
Type.4 Genetic factors
The degree of reaction of androgen hormones on the sebaceous glands in the human constitution varies the size of the sebaceous glands are different from this case is
determined by genetic factors.