Though the staff are very well-intentioned, I don't think they should offer threading services if they aren't properly trained to do it. I'm pretty sure she went in on my eyebrows with a razor because she couldn't manage to thread them properly - it felt like something sharp but as I've never done my eyebrows with a razor I'm not 100% sure. In any case, two weeks later and my brows are bigger and bushier than they've ever looked since I started getting them done 10 years ago!
I have had great experience and was taken care of well. I have had an allergic reaction to eyelashes placed elsewhere, I've wanted to have them removed ASAP. Simin was very gentle, took as much time as needed to remove extensions and properly clean all the glue from my lashes. I feel very grateful for her time and extremely satisfied with her work.