Final answer:
The procedure that involves scraping away the epidermis with wire brushes or sandpaper is known as dermabrasion.
Step-by-step explanation:
The procedure that uses wire brushes or sandpaper to scrape away the epidermis is called dermabrasion. This technique aggressively exfoliates the outermost layer of skin to improve its appearance by removing damaged skin and making way for new, smoother skin to replace it. Primarily used to reduce the appearance of scars and wrinkles, dermabrasion is a form of physical exfoliation, differing from microdermabrasion, which is a milder form of exfoliation. The process of handwashing is an example of degerming, which also reduces the microbial load on the skin but is much gentler and uses mild chemicals such as soap to prevent pathogenic microbes from spreading.