The causes of various types of acne

   1, whitehead acne Because the stratum corneum of the skin is too thick, sebum secretion is too strong. 

   2, blackhead acne When there is a whitehead on the skin and the surface is acidified or oxidized, it will cause blackheads. 

   3, nodular acne It is mainly caused by the presence of acne on the skin and the thickening of the cell fibers.

   4, inflamed red acne If there is nodular acne on the skin, and the acne bacillus will form an inflamed red acne. 

   5, cluster acne When the inflamed red and swollen acne is not well treated, the bacteria will be mixed and the cross infection will form a cluster of acne. 

   This is only part of the cause of acne formation. There are still many other reasons. Everyone must always do protection and maintenance.