The glands in the skin provide moisture that is necessary for avoiding dryness and psoriasis, but too much moisture can result in oily skin, which is susceptible to clogged pores. Oily skin can appear greasy or rough in texture and have large, visible pores. This condition is caused by over-active sebaceous glands. The sebum they produce is a natural, healthy lubricant in the skin, but too much of it leads to shininess, blemishes, and pimples—all signs of oily skin.
The goal of treating oily skin is to remove excess sebum from the surface of the skin without removing too much moisture. However, oily skin is not all bad; it is less prone to wrinkling and other signs of aging because oil locks moisture into the epidermis.
That means that achieving the right level of oil in the skin is important to making your skin look its best. Use careful hygiene and topical moisturizer to achieve this goal. Also note that healthy oils in foods, such as monounsaturates and polyunsaturates, can promote the right balance of moisture in the skin and reduce inflammation, which can cause blemishes and puffiness.