Let's get clean!
First things first, once your candle has burned out, you’ll need to clean out the wax from the holder to restore it to its former glory. There are a couple of ways you can do this, however the easiest (and most recommended) is to pour hot water into your jar and leave it to stand. The wax will float to the surface, allowing you to thoroughly clean it out with warm soapy water once cool. If left in warm soapy water for 5 minutes or so, this will also help remove any unwanted sticky labels. Alternatively, you can use an extremely cool environment instead of heat by placing the jar in the freezer, popping out the wax when frozen. Please be mindful and careful if you have a delicate, thin glass candle jar you’re trying to clean out, that both extremes of hot and cold may encourage the glass to shatter. It’s best to use warm (not boiling) water when you have a holder of this delicate nature.