Natural Soy Candles by Madeline Island Candles. Once you use a soy wax candle, you will know exactly why - soy wax candles are longer burning and cleaner, without paraffin candle soot and smoke buildup. Madeline Island Candles are made from good, old-fashioned, earth-grown soybeans to create environmentally friendly candles. The soy wax that we use is renewable, biodegradable, and made in the USA.