[Misc] In a Russian beauty salon on vacation, I had an 'ultrasound' treatment done. What was this?

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I'm returning to Russia soon, and I might do it again, but first I want to get some more info about it.It was a weird device using which she basically scraped all the dead skin off my face, and it made a high pitched noise. It was like an electric toothbrush but then faster, and it felt like a set of damn needles.IT WAS PAINFUL.She went literally inside my pores, cleaning them out, every single one, even on those painful spots, but she kept pressing it into them.I walked out after an hour of torture with a red face.Then, my face was clean for 2 straight months (I didn't have a routine, wasn't using ANYTHING), and it was the cleanest, brightest, and smoothest it ever was.Now I'm asking, what the hell was this?Thank you!
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Submitted by WolfofAnarchy