The LOOB fragrance burner is available in 3 colors: White, Gray, and Black. The opening at the top is large enough to accommodate scented wax (wax melts), essential oils, perfume, or any other fragrance solution. Our fragrance burners must be used with tea lights that are 4 cm in diameter and have a maximum burn time of 4 hours. The candle must meet current safety standards. Please also follow the safety instructions printed on the candle.