I done a spray tan on this lady 4 weeks ago and notice she had her feet done, they looked really nice. She had a french done by using an airbrush. She came back to me 3 weeks later for another spray tan and her feet still look good and she hadn't had them re done either, i asked her where she had them done and she said a NSS (they were only sprayed on no acrylic on them at all) She told me she has been to other people but they didn't last long so she went to the NSS for a change. What do they use for there top coat she had to go under a UV lamp afterwards. My whites don't stop like new not after 3/4 weeks and i use NSI thermosheild.