Proper candle care is essential for maximizing the life of your Noir by Nyrai Candle. Before lighting the candle each time, it is important to trim the wick to approximately 1/4 inch above the wax. Should the candle begin to produce excessive soot, or if the flame grows higher than 1½ inches, carefully blow out the candle and allow the wick and wax to cool. Trim the wick by running your fingers gently across the top of it. Remove and discard wick trimmings before relighting the candle. Do not allow it to burn for more than 4 hours at a time.