Reason 1: Genetics. Naturally, skin quality cannot be changed. For oily skin, the amount of oil is originally more, pores are coarser than others, and the stratum corneum is also thicker. In winter, oily skin can maintain a good condition, but once summer comes, the face will constantly shine with oil, and may even be completely blocked, resulting in a lot of pimples!
Solution: It is recommended to use a complete set of oil-control products for proper maintenance and adjustment in summer.