I just got the shellac nails done today since I have my bachelorette party this weekend(!!!). So far, I love them. The nail tech told me they do not damage nails like the OPI ones do, cause this is a polish vs a gel and she did not file the nails down.
Since my nails are short and crappy right now anyway, she said it may not last as long on my nails since you need a bit of length to reallly get the polish to hold, but we will see. She did say if I keep up with it, it should help my nails to grow, helping them be nice and natural looking by the wedding. I'll keep you posted, but I know some people asked about this a few weeks back, so I wanted to let you know my experience