Oily hair is a common condition characterized by an excess production of sebum, the natural oil produced by the scalp. This can lead to hair appearing greasy, limp, and unclean shortly after washing. Factors contributing to oily hair include genetics, hormonal changes, and environmental influences, such as humidity. People with oily hair may find that their hair requires more frequent washing to maintain a fresh appearance. Using specific hair care products, such as shampoos designed for oily hair, can help manage oil levels. Additionally, avoiding heavy styling products can prevent further buildup and keep hair looking healthier.