The causes of more oily skin after washing your face freqeuntly is that, general, skin appearance including moisture, flexibility, and smoothness comes from two main components of the skin.
The first component is sebum or oil produced from the sebaceous glands and excreted via our pores. The second component is the outermost layer of the epidermis (stratum corneum) which acts as a skin barrier and prevents water loss from the skin. Therefore, our skin will normally have both "water" and "oil" as a balance control, and they help your skin keep moisture.
For people with oily skin, sometimes their skin is oily but dehydrated. This condition affects in weak skin barrier which may be caused by the use of skin care or face wash products compounding with excessive detergent. This immoderate content leads to draw too much water or oil from the skin. Moreover, it may be affected from strong scrubbing and frequent face washing. These behaviors will destroy the skin barrier and cause the skin become more dehydrated. When the skin is dehydrated, the body will try to modify itself by stimulating the production of oil from the sebaceous glands resulting in the face look more glossy but dry and uneven. This type of skin may be easily irritated and have rash.
For oily skin people, actually, the frequent face washing is not necessary. You should normally wash your face only 2 times a day. The significant factor is choosing face wash product that is gentle to your skin and moderately wash off oil and water. You can also add or apply moisturizer on the dehydrated area to strengthen the skin barrier. As healthier skin barrier, it helps balance the oil as well as water in the skin causing less of oil production from sebaceous glands.
Information by: Dr. Nicha Tangpapong
Compiled by: Medisci Center