When you're making candles, you have to choose between two types of wax: soybean and paraffin.   Soybean wax is made from soybeans, which means it's renewable and biodegradable. It has a low melting point, so it's easy to work with and tends to burn cleaner than paraffin wax does.   Paraffin wax, on the other hand, is non-toxic and doesn't release any harmful chemicals when burned. It also has a higher melting point than soybean wax, which means that it won't burn as easily when exposed to flame or excessive heat—it'll last longer.