103040
Dermabrasion has been practiced for many years ( before the advent of lasers ) and involves the controlled deeper abrasion ( wearing away ) of the upper to mid layers of the skin with any variety of strong abrasive devices including a wire brush , diamond wheel or fraise , sterilized sandpaper , salt crystals , or other mechanical means .
 abrasion
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: media, plant, vehicle, astronomical object, time, disease, animal, location, person, organization, mythical figure, food, biology, geographical phenomenon, instrument, event 
Text: {0} 
Answer:
 abrasion