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Light your candle in a well-ventilated room, away from drafts, or fans, which can cause sooting (black marks on the vessel), or rapid, uneven burning.
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Burn regular-sized candles for one and a half to two hours at a time. Burning for less time can cause the candle to 'tunnel', which leaves a build-up of wax around the vessel's sides. Burning for longer periods (over four hours) can cause the wick to move, or slant.
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Make sure you stop burning your candle when 10mm of wax remains at the bottom, keeping an eye on a burning candle when the wax is low.
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Keep the wax pool clear of wick trimmings and matches, as debris in the wax can act as a secondary wick, encouraging your candle to burn faster.
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After extinguishing the flame with a snuffer, centre and straighten the wick. Burning for too long can cause the wick to move, or slant. If you see a flaming wick come close to the vessel wall, extinguish the flame and straighten the wick to prevent the vessel from cracking.
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Long, or crooked wicks can create high flames, smoking, or sooting. Trimming the wick to 5mm (when the wax has set) is the easiest way to prevent this.
