What is a common sign of oily skin?

Glossiness is a common sign of oily skin due to the overproduction of sebum by the sebaceous glands. This excess oil can create a shiny appearance on the skin's surface, particularly in areas like the forehead, nose, and chin, commonly referred to as the T-zone.

In contrast, dry patches typically indicate a lack of moisture in the skin, which is not characteristic of oily skin. Tightness often occurs with dry skin conditions, where the skin feels uncomfortable and stretched due to insufficient hydration or oil. Sensitivity can affect any skin type but is more common in dry or compromised skin, rather than oily skin, which generally has a robust barrier due to its oil content. Thus, the presence of glossiness is a definitive indicator of oily skin, highlighting the distinct characteristics that differentiate it from other skin types.