Using these candles is easy. Just place them in a standard taper candlestick holder. When lighting, use a long - reach lighter or match to avoid burning your fingers. Make sure the candles are on a flat and heat - resistant surface. As they burn, they'll last about 5 - 7 hours. After use, let them cool completely before handling. To keep them in good condition, store them in a cool, dry place away from direct sunlight. Don't touch the wax when it's melted or hot, as it can cause burns.