| Acne cosmetica | |
|---|---|
| Specialty | Dermatology |
| Symptoms | Dense group of similar sizedblackheads and whiteheads, scatteredsmall bumps in skin[1] |
Acne cosmetica is a type of contactacneiform eruption caused by or aggravated bycosmetics.[1] Signs and symptoms include a dense group of similar sizedclosed comedones and scatteredsmall bumps, typically over the skin where the cosmetic has been applied.[1] Flare-ups do not generally occur shortly before menstruation and open comedones are not common.[1] There may be associatedperioral dermatitis.[1]
Treatment includes withdrawing the acnegenic products, and sometimes applying aretinoid.[1]
Signs and symptoms include a dense group of similar sizedclosed comedones and scatteredsmall bumps, typically over the skin where the cosmetic has been applied.[1] Flare-ups are not a typical feature shortly before menstruation.[1] There may be associatedperioral dermatitis.[1]
The mechanism is thought to bechemically induced plugging of thepilosebaceous orifice. This became a significant problem fordermatologists in the 1970s and 1980s, but with the improved formulations produced by cosmeticchemists in the decades since[update], a diagnosis of acne cosmetica has become relatively rare in dermatological practice.
The terms "non-comedogenic" and "non-acne(i)genic" appeared onmoisturizers and other cosmetic compounds as manufacturers introduced re-formulations—sometimes associated with claims that the products were "oil-free" or "water-based". Although early work produced lists of comedogenic chemicals in various strengths and vehicles, it became apparent[to whom?] that one could not predict the actual comedogenicity of a product from its contents; rather, the finished product itself needed use-testing.[citation needed]
The production of a low-gradefolliculitis by some components of cosmetic products has led to misdiagnosis on occasion. People may not attribute skin reactions to their cosmetics at first, but may notice worsening symptoms after using certain facemakeup,sunblock or lip products.
Reactions are more likely to occur if applied cosmetics are left on and not stripped after wearing them.[2]