The wood wick trimmers by Hetkinen are perfect for accurately and effortlessly cutting the wooden wicks of Hetkinen veggie wax candles, but they can also be used for cotton wicks. Trimming the wick is truly worthwhile, as a shorter wick provides a beautiful flame and a longer burning time – if the wick gets too long, the candle burns too hot, making the wax melts faster. A neat wick also guarantees that the candle stays smoke-free. The recommended length for the wooden wick of the Hetkinen veggie wax candles is 0.2 x 0 in (5 x mm. mm).