PSI Barbering Practice Exam 2026 – 400 Free Practice Questions to Pass the Exam

The condition that is primarily due to the overproduction of oil by sebaceous glands is an oily scalp. Sebaceous glands are responsible for producing sebum, an oily substance that helps to keep the hair and skin moisturized. When these glands become overactive, they produce excess sebum, which can lead to an oily scalp. This can contribute to various issues such as greasy hair, clogged pores, and even conditions like acne.

In contrast, dandruff is typically related to an imbalance in the scalp's moisture levels or the presence of a certain type of yeast, rather than solely the amount of oil produced. A dry scalp is characterized by a lack of moisture and is not associated with excessive oil production. Folliculitis refers to the inflammation of hair follicles, which can occur due to infection or irritation but is not directly connected to the overproduction of oil by the sebaceous glands. Therefore, oily scalp is specifically linked to the excess activity of these glands.