Common candle wax, also called paraffin, is a petroleum based product. Even medical and food grade paraffin is made of the same basic chemical compounds (ester or ethylene glycol) as anti freeze, motor oils, or synthetic lubricants. Burning traditional wax candles releases these elements into your home's atmosphere. Many mass produced candles also contain lead in their wicks, which when burned, can cause lead air levels from 9 to 33 times higher than recommended by federal guidelines. Candles in the "Groove" collection are 100% soy wax, with 100% cotton wicks. They burn pure and clean, no sot, no lead, and no toxins. They are scented with natural citrus and essential oils that produce a bloom of fragrance that fills your home. The scents are light and natural, delicate yet full. You will love the aroma and feel good about their environmental safety.