Soy candle wax is non-toxic and burns cleaner than paraffin. No petrol-carbon soot that adds toxic carcinogens in the air we breathe. They are longer burning (approximate 20 hours) and more efficient than paraffin. Soybeans are a renewable resource and biodegradable. This vanilla scented wax filled in a beautiful frosted white or black glass and bamboo covering lid provides you with the relaxation you need. Note the printing ink on glass can not be baked, the print may not hard as baked.