Hello Laura,
I have microdermabrasion at the beautician about 1 a month. The place where I go to they do a very good job: they cleanse thoroughly, put glycolic peel on first before the do the microdermabrasion. Microdermabrasion is basically a facial scrub using a machine that pumps crystals on to your skin and then suck them up again. It's more intense than a home facial scrub. Afterwards, you skin will be slightly red. If your skin is spotty, greasy then this is great for you. Regular treatments, once every 3-4 weeks, are ideal to keep your skin glowing. It's perfect to get rid of deeper debris that settles just under your skin.
I have been to places that just uses the machine without proper cleansing and glycolic acid. It did not clean my skin as good and I did not like it at all.
You don't need to go to a surgeon to have this done, a qualified beauty therapist should know how to do it.
I have been told that this treatment is ideal for women between 25-30s as their skin still retains elasticity, but if your skin is older/drier then it could be too harsh. My skin is oily and I get blackheads and spots occasionally because of the sebum beneath.
Hope this helps.
Yen