Best Practice: Trim your EC3 Air Purification Candle wick back down to 1/4" before every burn, while the wax is solid and the candle is cooled.) 1. Open the wick trimmer and place the rounded base almost flush with the surface of the candle. 2. Hold the candle wick trimmer at a 45-degree angle to ensure a proper wick length of 1/4 inch. 3. Bring the two handles together to close and trim the wick. 4. Discard the wick trimming before lighting.