OMG!!! I have a CND glue I could not get the top off for love nor money, they are over 10 quid when you add vet, and I had used it once. Its been sitting in a drawer for 6 month, I've just done this and it works!!! I've put solar oil around it, so hopefuly I can use it now!This happens to me all the time. I boil the kettle, hold the glue sideways and rotate it, whilst pouring the boiled water over where the lid would screw off. I keep rotating it until I've used all the water!! Always works for me.