This treatment takes way longer than an hour and a half. Id left just under two hours before i needed to be at work and ended up having to leave with unfinished nails. The gel sculptures were good but some had been left pretty bumpy which i had to go to another salon to get fixed. I repeatedly told the lady what time i needed to leave for work but they were unfinished, i was told juat to paint them myself at home and was not offered by the manager to get the shallac done later that day or return another day for it. I paid full price for half done nails!! So overall i was pretty unhappy.