How to Clean Out & Refill a Candle Jar
Burn the candle until 1/4" of wax remains.
Put the candle in the freezer for 24 hours. At this point, the wax should have separated from the container a bit.
For gold tins - push the bottom gently with your fingers until the wax "pops" off the bottom. Using a paper towel, reach into the candle to remove the chunk of wax.
For wood wicks - put a towel on a surface, and a paper towel on that. Tap the candle upside down on the towels and the wax should fall lose. If this does not happen, you can also use a spoon to pop the wax out (cover the spoon in paper towel).
No need to clean out the container perfectly! That's the joy of our refills. If there's wax on the side of the jar, it will just melt into the new candle.
Press your refill into the container so there's minimal air for the wax to melt into.