All of our wicks are pre-trimmed to the ideal 1/4" height so it's ready to light as soon as you get it home.  Ensure you burn your candle long enough for the melted wax to reach the edge of the vessel (approximately 2 hours for travel tins, 3 hours for mason jars and botanical candles).  Don't burn for more than 4 hours at a time. For all subsequent burns, trim the wick back down to 1/4".  Keep your candle free from debris and wick trimmings.