Keeping your candle's wick trimmed helps it burn more cleanly and efficiently. The proper wick length of our candles varies by size, shape, and fragrance. Let the candle come to room temperature, then trim the wick to the length stated on your candle's bottom label before relighting. That length helps create complete combustion, which means less soot is formed while the candle is burning. This is where our Perfect Wick Trimmer comes in — place the bottom of the trimmer flush with the candle surface and then rock the trimmer back so that its "elbow" rests on the surface. Angle the trimmer to the correct wick length and snip. Simple! Enjoy your candles and their fragrances, then repeat again after every 4 hours of burn time.