Dermal removal is the removal of certain layers of the skin and / or the chorus (deeper layers) to improve fine lines and discolorations. Dermal removal can be done chemically or mechanically, or even using a laser. The chemical way is chemical peeling, which can be done by applying substances such as alpha-hydroxy acids, trichloric acid (TCA), phenol, etc. The mechanical way is to use special medical devices for scraping (dermabrasion, microdermabrasion).
The application should be done by specialized doctors rather than non-specialists, as chemical peeling can have very unpleasant consequences if not used properly.