Burn your candle for at least 1 hour and no more than 4 hours to ensure maximum fragrance throw & longevity from your candle.
If your candle is nearly out of wax, stop burning it when there is ¼ of an inch of wax left at the bottom. If you burn the candle all the way through the wax to the bottom, it could cause the jar to break.
Cotton Wick specific:
Be sure to trim your cotton wicks to 5mm before relighting with a wick trimmer or scissors.