The so-called face with oil, most refers to certain people are oily skin, mainly refers to most of the facial sebaceous glands are more developed, especially in the puberty development period, due to the development of sebaceous glands, in the stimulation of sex hormones, it is possible to secrete too much oil, excretion to the outside of the sebaceous gland ducts, the formation of the face of the feeling of greasy. Certain people are overstressed, or have an irregular lifestyle and often stay up late for reasons. It also includes an unhealthy diet, such as smoking, drinking and eating spicy and irritating foods in general, which may promote the production of oil and make the face look more greasy. It is also important to consider the occurrence of sebaceous gland inflammation or folliculitis on the face.