From NEST New York, this candle features:  Trim the wick to ¼ inch each time before burning. Center and straighten the wick after blowing out your candle Burn candles in a well-ventilated room Keep the wax pool clear of wick trimmings, matches and debris Keep burning candles away from drafts, vents, fans or air currents Before re-lighting a candle, let the candle cool completely Burn regular-sized candles for 3–4 hours at a time Burn candles in an ambient of 65–75 degrees °F When burning multiple candles, place at least 8 inches apart If a candle is burning unevenly and the wick is centered, it’s in a draft Never leave a burning candle unattended or within reach of children and pets.