Virtually every candle brand infers or declares their products to be safe and natural. Most brands still use petrochemical wax and even those using plant wax typically use petrochemical derived fragrances. Burning petrochemical derived products carries wide risks to one's health. We at Zing have had independent purity research carried out successfully on a very wide range of our base ingredients and end products so you know what you're getting. To our knowledge no other British brand has gone this far to protect the consumer. See the FAQ page on our website for more detail. And by the way most other 'eco brands' we had examined didn't fare too well! However there's nothing to stop them getting the same lab analyses done as Zing!