I originally put a single gem and a heart on. The heart came off after a few days but this was 100% my fault as I’d chosen a tooth which wasn’t large enough. The other gem has been on now over 4 weeks. I’ve also used it to adhere a heart gem to another tooth, a single gem and a metal star which have been on 3 weeks. I’ve still got stuff left to be able to do more. Much better than I expected