Completely white, the top of its shell lifts to hold your scented waxes, fragrances, essential oils, and other scented solutions. The openings allow the soft glow of the candle to filter through. Our fragrance burners must be used with tea lights that are 4 cm in diameter and have a maximum burn time of 4 hours (not included). The candle must meet current safety standards. Please also follow the safety instructions printed on the candle.