What is the key sign of closed comedones?

The key sign of closed comedones is the presence of non-inflamed bumps under the skin. Closed comedones, commonly known as whiteheads, occur when hair follicles become blocked by a combination of dead skin cells, oil, and bacteria. This blockage creates a small, raised bump that is not inflamed, differentiating it from open comedones, which are blackheads that are exposed to air and oxidize, causing a dark color.

In this case, the non-inflamed nature of these bumps is crucial for identification. Unlike other skin conditions, closed comedones typically do not exhibit redness or swelling, which helps in distinguishing them from acne that is accompanied by inflammation. Understanding this characteristic is essential for proper skin assessment and treatment planning, empowering estheticians to effectively manage their clients' skin concerns.