What causes oily skin?
Oil, known as sebum, is naturally secreted to keep your skin supple and healthy. When excess oil is released, your face becomes shiny or greasy – you may have excess oil all over your face or you may have combination skin in which your t-zone (forehead, nose and chin) becomes shiny while the rest of your face appears normal or dry.
If you have an oily complexion or t-zone, you may notice enlarged pores, blemishes, uneven skin tone, or blackheads.
So, what exactly causes your skin to produce excess oil? Oily skin can be caused by hormonal changes, your environment or genetics.
Why do I need to use a moisturiser if my skin is oily?
Sebum is not the same as moisture. While oil lubricates the skin, it doesn’t mean that you don’t need hydration.
If you use harsh beauty products which strip the skin of its natural moisture, or your oily skin is simply suffering from dehydration, your skin begins to produce excess sebum, making your complexion look even oilier than normal.