Our expert potion masters don't use straight essential oils in our candles for a few reasons: 1. As essential oils become heated, they can become toxic! 2. When heated, EOs lose therapeutic properties 3. When heated, EOs on their own can become quite flammable, which is a danger. 4. When used in wax, essential oils are not very potent and can barely be smelled if that’s all being used in the wax. 5. They are incredibly expensive! For example, it takes 10,000 rose petals to make just one pound of rose essential oil! That said, our premium fragrance oils often are often blended with real essential oils in them, but are not made only with essential oils. Most companies you see that claim to use EO in their candles are using it as a marketing term only, and are also using a mixture of synthetic and EO.