This recent news from the UK is a reminder to all of us to only use and buy quality candles from reputable sources. The Candleroom only uses quality glass containers in all our candles. Our Jars Candles are food-grade mason jars designed to withstand heat, thus safe for burning candles. Nevertheless, never leave burning candles unattended and always maintain the wick at 1/4 inch. And don’t burn a candle for more than 4 hours.