Skin that has balanced sebum production is neither too oily nor too dry. It looks smooth, has an even texture, and is not prone to irritation.

Skin with increased sebum production, often shiny and prone to enlarged pores. May or may not be prone to blackheads and other skin imperfections.

Skin that tends to develop pimples, blackheads, acne, and inflammatory changes. It can be the result of excessive sebum production, clogged pores, and the presence of bacteria.

Skin that produces less sebum than it needs. It is prone to flaking, tightness and may have a rough texture. It often looks dehydrated and sensitive.

Skin that shows signs of aging, such as wrinkles, reduced elasticity and uneven tone. It is usually thinner and can be prone to dryness.