Cleansing, exfoliating, matting - and where is the place to moisturize? One of the biggest myths about caring for oily skin is the belief that moisturizing creams can only worsen skin condition. According to supporters of this thesis, moisturizing skin that is already moist and oily seems stupid. And yet oily skin needs an adequate dose of water. Absolutely every type of skin requires hydration, as water is essential for its proper functioning.