When burning your candle for the first time, allow it to burn for 2 to 3 hours, until the top layer of the wax has completely melted. This will prevent the wax from tunneling around the wick. When burning the candle after the first burn, do not let it burn for over 3 hours at a time.
Ideally, we recommend keeping the wick trimmed to 1/4 inch at all times to prevent the candle from emitting smoke or the wick falling into the wax.
After each burn, see that the wick is centered in the wax. This will also ensure that the glass does not overheat. The wick and flame should never be touching the glass. When approaching the end of the candle, leave ¼ inch of wax unburned and ensure you are not burning the candle for more than 3 hours. The glass can get overheated without the presence of wax and break.
