Why doesnt glue dry in the bottle?

Question:

Why doesnt glue dry in the bottle?

...just wondering...

Best Answer - Chosen by Asker:

Because as long as the bottle is kept with the top on, there is no evaporation or air flow to affect the moisture content! Same with alcohol, perfumes, paints (oil-based, arylic or water-based or Latex paints); even WATER eventually evaporates if left out in the open sitting still (long enough) and exposed to the elements but not so if in a container with a cap on.