First, begin to watch your diet. On the oiliness of the skin effect of sugary, fatty and salty, so these products will have to abandon or reduce their consumption to a minimum. Do not eat pasta, bread, potatoes (because they contain starch). Enter in your diet plenty of vegetables and fruits, lean meat, eat porridge (buckwheat, oats, corn, etc.). In addition to the condition of the skin, and improve the overall condition of the body, hair and nails, to reduce weight. The result will be seen in a month.
Of course, a skin condition recognized and your bad habits such as smoking and alcohol consumption.
Restore the intestinal microflora using drugs with addition of live bacteria.
To reduce the fat you need a little dry and clean your skin. For this use foams and gels containing, for example, zinc as well as alcohol-based toners. Use them daily, morning and evening. Do not forget to moisturize the skin after them with the help of cream (required for oily skin).
Make a mask. Try a mask based on clay (you fit white, blue and black). Dilute dry powder with warm water, apply the mixture on your face for fifteen - twenty minutes. Do this twice a week, and the results will amaze you.
Refer to the beautician. Regularly clean the face to remove blackheads, and other contaminants.
If all of the above methods did not help you, have to go to an endocrinologist and gynecologist. They will find out the true cause of oily skin and help you solve your problem with the help of drugs.