This is the first tool you'll reach for when you're ready to extinguish your A/Z Apothecary candle. It trims the wick to just the right length, so it burns cleanly and evenly, preventing smoke and blackening. Trimming the wick will help ensure your favorite A/Z Apothecary candle burns smoke-free for a full 90 hours. The Wick Trimmer is an accessory to re-center the wick when extinguishing, so that blackening does not occur on the glass holder.