Melts are made of soy wax, which is both biodegradable and sustainably sourced. Each 2.5 Oz. melt wax has a melt time of 30 hours. Hand-applied decorative element makes this melt unique and beautiful. All decorative elements have been tested to ensure they are safe for warming. Wax melts offer a no flame, no soot, no smoke sensory experience. Pair with one of our Candle Warmers Etc. Fragrance Warmers, available in a variety of styles and colors. 2.5 Oz. of wax is poured into a plastic tray that divides wax into 6 cubes. Tray can be used for wax-cooling and remelting your wax later.