California Cosmetology Practice Exam

Oily skin is characterized by an excessive production of sebum, which leads to a shiny appearance. This overproduction can cause the pores to become clogged, resulting in breakouts such as acne. Individuals with oily skin often have a consistent shine across the forehead, nose, and chin, known as the T-zone, and may also experience enlarged pores. The oil can serve as a breeding ground for bacteria, increasing the likelihood of developing blemishes.

In contrast, dry skin lacks adequate moisture and often feels tight or rough, without the shine associated with oily skin. Combination skin exhibits characteristics of both oily and dry skin but does not necessarily have a consistent shine across all areas of the face. Sensitive skin may react to products or environmental factors but isn't solely defined by shine or breakouts.