Oily skin and seborrea - Mavi 2012

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Oily skin and seborrea

Health Area > Dermatology

"Oily skin" appears thick and shiny, with open pores, especially on nostrils and cheeks. Moreover, it has a dull color, and can show many open or closed comedones. If an abundant sebaceous secretion giving the skin an oily look is also present, then an oily skin can be defined as seborrhoeic.Seborrhoea is an increase in surface lipids, partly coming from sebaceous secretions, or sebum, and partly from tissues in the stratum corneum. These lipidic fractions may be combined (though to a lesser degree) with ones from external factors, such as cosmetic products, smog, etc. Additional lipids are also produced by micro-organisms on the cutaneous surface. Qualitative and quantitative alterations in sebum appear of primary importance in its onset. Oily skin, unlike normal skin, is minimally hydrophilic. The natural balance between water and fats breaks down, and as a result oiliness increases and the surface lipidic film becomes thicker. The presence of  unsaturated fatty acids and NMFs, both of which are indispensable to the stability of skin hydration, are reduced. In addition, the skin tends to lose its self-sterilizing capacity, resulting in the potential for infection.

 
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