It is the process of removing dead cells from the surface of the skin, resuling in a softer, more youthful appearance. There is a plethora of products out there for exfoliation, many contain botanical ingredients which may aggravate sensitive skin. Make sure to always test skincare products first in an inconspicuous area of the skin before using them. If redness, or an allergic reaction occurs, stop use of the product immediately. Oily skin is also a problem for some.
Oil is created by the sebaceous glands in the skin.
It is necessary to have some oil on the skin, because oil protects the skin from moisture-loss. If skin is too oily, it can result in clogged pores or blackheads. The best thing you can do is avoid over-washing. Removing all the oil from the skin will only stimulate the sebaceous glands into producing even more oil, and will only worsen the condition. A good skincare regimen should include an astringent to clean out pores and remove makeup, an exfoliator to remove dead skin, a cleanser that contains moisturizers, and a toner to refresh and invigorate the skin.