Mattarot's 100% Crystal Intention Candles are made with natural soy wax and cotton wicks for clean burning. Every candle is poured on the evening of a Full Moon to enhance the energy of the crystal. They burn for 40 hours. Never burn for more than 4 hours at a time! Each candle has an all natural essential oil paired with a crystal for a focused intention to use in your spiritual practice. Mattarot believes spirituality is 100% individual. Therefore, candles crafted with specific intentions can be used how you see fit. (Just practice fire safety, of course! ♥)