Where does it come from, the glow on the skin? The sebaceous glands produce too much sebum (skin fat). Excess sebum settles on the skin surface and makes it shiny. In addition, the oil layer prevents oxygen absorption, which is why oily skin often looks slightly pale. An excess sebum production can be caused by many different factors: Hormones, stress, diet, incorrect care (e.g. too little moisture) or high temperatures.
But with the right beauty program you can easily get rid of the shine and get matte skin!