What is Microdermabrasion? First, there are 2 kinds. The original is a crystal microderm that uses suction and tiny crystals to abrade the skin. It can be messy! You may find OTC microderm scrubs that use these crystals in the formulation. The second kind is diamond-tip microdermabrasion. This uses a tip imbedded with tiny diamonds to abrade the skin with suction to suck up dead skin cells scraped off by the diamond tip. I use diamond-tip. It can feel like a kitten licking yo