Pure Beeswax 18-hour Votive Candles (18-pack), Pacific Blue (un-scented) MUST be burned in a tight-fitting votive holder. Burns about 18 hours each if burned continuously - may not burn fully or as long if not burned at least 2 hours at a time or if wick altered or disturbed. Burn control tab (metal tab at base that holds wick upright) ensures full burn. Do not disturb or move once the wax is liquefied as the wick may shift to the edge and cause the holder to break. Highly filtered beeswax burns cleanly, consistently and completely. Cotton wick with paper strands, no metals. Handmade with care. Beeswax is natural and non-toxic, renewable and ecologically sustainable, and makes the world's best candles. Beeswax makes negative ions as it burns that clean the air of pollutants, allergens, irritants, toxins and odors. See the Santa Fe Beeswax Candle website for more information on correct candle burning and beeswax, find sale items and access our full product line.