Impure skin may have a variety of reasons and is not a question of age. Acne may occur during puberty, menopause, pregnancy or stress. Bacteria, environmental influences, wind and weather stress skin as extrinsic factors on the one hand, but it may also be caused by medicaments, hormonal oscillations or diseases as intrinsic factors on the other. The appearance is characterized by shiny, oily areas, comedones, pustules and blemishes, deposits, scars and enlarged pores. The best way to rebalance skin is a consequent skincare, tailored to the respective skin type.