Name a characteristic of oily skin.

Enlarged pores and shine are key characteristics of oily skin. Oily skin is typically the result of overactive sebaceous glands that produce excess sebum. This excess oil can lead to the appearance of larger pores because the oil tends to accumulate, stretching out the pores. Additionally, the high level of oil on the skin's surface gives it a shiny appearance, which is often one of the first indicators that someone has oily skin.

In contrast, other characteristics listed, such as fine lines and wrinkles, a dull appearance, and flaky texture, are more commonly associated with dry or dehydrated skin types rather than oily skin. Fine lines and wrinkles typically occur in more mature skin, a dull appearance often arises from a lack of moisture or exfoliation, and flaky texture indicates dryness or irritation rather than excess oil. Understanding these characteristics helps in properly classifying skin types for appropriate skincare treatments and products.