Upfront you should know that the ONLY THING I don’t like about this machine is its size. Everything else I LOVE.The Unoisetion machine very simple to use. It comes with a long silicone tube/hose which you first attach to the “inhale” on the machine, which is the suction port. But before you screw the suction port back to the machine, you insert one of the large filters that comes with the set.There are 3 wands, each of which has a place to sit in the machine. There are 9 diamond heads, from small and fine, to big and course. If you want to microdermabrasion your elbows, knees, and heels, you’d screw on the large and course diamond heads to one of the wands. And just as you did with the suction port, you’d add a small filter (also included) between the wand and the diamond head. These filters are meant to keep the inside of the silicone tube and the inside of the machine clean of dead skin cells, and any other debris abraded from your skin. If you want to microdermabrasion the sides of your nose or around your eyes, you’d attach the smallest diamond head to the wand.After you turn on the machine — which is quiet — you turn a dial on the machine which adjusts the suction power of the vacuum. I’ve used a diamond head on my face at about half to three-quarter power and not been remotely adversely affected. My face hasn’t been left red or my skin rough. On the contrary, my skin has been left bright, tight, and silky. The Unoisetion microdermabrasion machine truly yields outstanding results.