The wax in Green Leaves™ candles is made from US grown soybeans and has a high melting point that makes our candles last longer and also allows us to apply a heavier fragrance load. We use a flat braided cotton wick with paper threads woven into the cotton. The reinforced construction of the wick is designed to ensure a consistent burn with higher fragrance loads. Are wicks are also lead and zinc free. Our Fragrance oils are remarkably strong, true to life, and tested for exceptional performance in soy wax candles. Natural essential oils are infused into our fragrance oils to ensure a crisp and clean scent in every candle we make.