If you have a stopper that is stuck in your perfume bottle, or any other type of beauty product you can get it out by using a bowl of warm water. Put the bottle in the warmed water for a few minutes and the glass will expand just a bit so you can get the stopper out. Be sure not to use extremely hot water which could break the glass.
If your stopper is still stuck in the bottle, use a mixture of two teaspoons of alcohol, one teaspoon of glycerine and one teaspoon of salt. Shake this mixture and then pour it over the stopper to loosen the area where the next and the stopper meet.