Which characteristic is associated with oily skin?

Oily skin is characterized by larger pores and a shiny appearance. The sebaceous glands in individuals with oily skin produce excess sebum, which can lead to a noticeable shine on the skin's surface. This overproduction of oil causes the pores to appear larger, as the additional sebum can stretch and enlarge them. This characteristic helps in distinguishing oily skin from other skin types, which may exhibit different concerns such as dryness, sensitivity, or irritation.

In contrast to this, other characteristics mentioned, such as dry patches and redness, tightness and flakiness, and sensitivity and irritation, are typically associated with dry or sensitive skin types rather than oily skin. While oily skin can also have different issues, the defining traits are primarily related to excess oil production and its visible effects on the skin's texture and appearance.