Had shellac take off so not much can go wrong. However today Raquelle was a little zealous - didn't buff my nails before putting in acetone and went to scraping off a few seconds after the first dip, and I'm not saying it didn't work, but it's not usually done this way and surely there's a reason? Anyway after removing the polish the buffing of the nail surface was a little imprecise and kept skipping and scraping my nail up and out of its nail bed which hurt and now on those fingers where it happened, I've got those horrible undernail cuts, where the skin has come away from the nail, which hurt so much.