Microdermabrasion did absolutely nothing for me. Didn't remove wrinkles, didn't tighten or freshen and I went weekly for a couple months. My skin looked exactly the same when I finished my 10 sessions as it did when I started.
Maybe it works on someone who has skin that is criss-crossed with wrinkles and is dried up looking.
If you are looking for tighter, fresher skin, spend your money on something else.