Our Signature Wax Melt Collection is made with soy, coconut, and sunflower waxes, which are environmentally friendly. These waxes are derived from renewable resources, and they are biodegradable and non-toxic. We also use phthalate-free fragrance oils in our wax melts. Phthalates are a class of chemicals that are used to make plastics and other products more flexible and durable. They are known to be harmful to human health and the environment.