Glade Scented Oil Candle Refills, 4-Count Shimmering Spruce (Pack of 3) Glade Scented Oil Candles contain a unique warming plate which melts the candle into a pool of scented wax, quickly releasing fragrance into the air to create a warm and relaxing atmosphere. When the wax is gone, the candle goes out, leaving no mess behind. Each candleholder is refillable with any Glade Scented Oil Candles fragrance. Approximately 2-3 hours of burning time. A name you trust.