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I’m not sure what everyone else who’s reviewed has been using but I have a good lamp I keep it under for 1 minute 30 seconds, I done two coats using the white colour and after the whole time of setting I went to use top coat and it just went watery and you could see my natural nail! I had to then take it all off which was a pain. I wouldn’t buy this product again, I would say I can’t complain because of the price but I use other cheap gel colours and this doesn’t happen.