The most common cause of oily skin is an excessive amount of sebum produced by the skins' sebaceous glands. Surprisingly, oily pores are sometimes a result of a dehydrated skin-surface. When the skin is dry or dehydrated, it naturally responds by over-producing sebum. Additionally, removing too much sebum may cause oilinessm as the skin overcompensates sebum-loss.
There are two key aspects of pore-minimizing care. 1. Removing excess sebum, dirt and impurities will clear pores. 2. Your skin must stay hydrated with the proper, targeted skincare in order to prevent excessive sebum from reoccuring. Also, Vitamin C is a key skincare ingredient, as it balances sebum levels, and helps revitalize the complexion.