Open the glued nail polish bottle
Anyone who has many nail polish bottles in his bath, like me, knows that: the bottles, which have not been used for a long time, stick and dry, so that they can not be screwed on. In the past, I tried hard or screwed it on with my teeth, but it was enough to hold the bottle briefly in hot / warm water.
In stubborn cases, you can also give some nail polish remover on the bonded spot. Another tip on how to prevent something like this: just after the (first) use, apply a very thin layer of Vaseline to the seal.