I've only ever known one person who has had dermabrasion and it was 40 years ago when the technology was rather primitive - think Black & Decker more than diamond tip - but the results were amazing. Completely eradicated the scarring due to electrolysis.
I had three sessions a few years ago, a pampering gift from 33. I don't know why I haven't gone back for more because the results were good. I made the mistake of not being vigilant in using an SPF so got some freckles. Make sure you slap it on thick Yorko