Oily skin is annoying, and it is something a lot of people deal with, including me. For a long time, I wondered why it happens. Is it sweat, genetics, or just the weather? It turns out it is not just one thing. Oily skin comes down to how much sebum your skin produces, influenced by a mix of genetics, environment, and even your daily habits. Sebum is the natural oil your skin makes to protect and hydrate itself. The problem starts when your sebaceous glands produce too much o