Nail glue is a type of adhesive used to bond artificial nails to natural nails. It is typically made from a combination of cyanoacrylate and ethyl acetate, and it can be difficult to open due to the strong bond it creates.
There are a few different ways to open nail glue. One method is to use a pair of pliers to gently squeeze the sides of the bottle. This will help to break the seal and allow you to open the bottle. Another method is to use a sharp object, such as a knife or a pair of scissors, to score around the edge of the bottle cap. This will also help to break the seal and allow you to open the bottle.