Our Large Skull Candles are made with 100% Soy Wax, so they burn really clean. The fragrances we are using are a paraben free and are safe for dogs and cats. Our candles are hand poured, and tested. We use 100% soy. They burn for at least 60 hours.We use only fragrance oils that are Paraben free, and don’t contain harmful Phthlates in our candles and melts for a safe and wonderful smelling home , and they are non toxic to dogs and cats We are using a high fragrance load for the candles. Burning tips and safety: • Burn within sight • Keep away from combustibles • Keep away from children • Trim the wick to 1/8” at all times • Burn only on a heat resistant surface, away from drafts • Avoid burning the candle for more than four hours at a time • Store candles in a cool dry place • Stop burning the candle when the wax reaches 1/2” at the bottom of the candle jar • When you use the candle for the first time, burn it until you have reached a full melt pool on the top.