All of our candles are made from soy and all natural essential oils, resins and dried herbs. They contain no chemicals and no wire wicks. The wicks are all 100% natural either cotton wicks for the larger candles and all natural hemp for the smaller. These candles burn cleanly and evenly and because they have no chemicals in them, they are better for not only the environment but for you too. Breathing in fumes from candles using harsh ingredients and can cause headaches, trigger allergies and skin irritations in not only you but for your pets as well. Not to mention no one really knows what these kinds of chemicals can do to you over the long term.