Which condition is characterized by excessive sebum production?

The condition characterized by excessive sebum production is oily skin. Sebum is an oily substance produced by sebaceous glands in the skin, and when these glands overproduce sebum, the result is typically a shiny appearance on the skin's surface, enlarged pores, and a higher tendency for acne and other skin issues.

Oily skin may arise from various factors, including genetics, hormonal changes, and environmental influences, which can trigger these glands to be overactive. This condition often requires specific skin care approaches such as using non-comedogenic products designed to remove excess oil without stripping the skin of its natural moisture.

In contrast, the other skin types—dry skin, combination skin, and sensitive skin—characterize different issues. Dry skin often lacks sebum and moisture, combination skin has both oily and dry areas, and sensitive skin usually reacts adversely to various environmental factors or products, but is not defined by excessive sebum production. Thus, understanding the nature of oily skin is essential for providing the right treatments and care.