For the best results, Night Space recommends burning the candle to its outer edge each time it is lit. The wick should be kept trimmed to a quarter of an inch (ca. 6-7mm) to avoid smoking and overheating. After burning, the lid of Night Space’s ceramic vessels can be used to extinguish the flame as well as keep the wax clean until the next use. A candle should never be burned when the wick is shorter than ¼” at the base. It is important to always place candles on heat and stain resistant surfaces.