In skin care, what does the term 'comedo' refer to?

The term 'comedo' refers specifically to a clogged hair follicle, which is a key concept in dermatology and skin care. A comedo can be classified as either an open comedo (commonly known as a blackhead) or a closed comedo (commonly referred to as a whitehead). The condition arises when sebum (oil) and dead skin cells accumulate in the hair follicle, leading to blockage. This blockage can become oxidized, turning it dark in the case of blackheads, or remain closed beneath the skin surface, which is typical for whiteheads. Understanding comedones is crucial for estheticians as they are a common skin concern and play a significant role in conditions such as acne. Managing comedones typically involves exfoliation, proper cleansing, and sometimes topical treatments to prevent and reduce their formation, making this knowledge essential for effective skin care practices.