There seems to be mushrooming at the end of my wick. Is this something to worry about?

“Mushrooming” at the end of your wick is simply carbon buildup and may happen from time to time. It is typical of core-less/lead free wicks. To quickly and neatly trim your wick, we recommend turning your cooled and hardened candle upside over a garbage bin where you may simply trim or pinch the excess wick to 1/4 of an inch. Prior to relighting, make sure you clean away any soot or debris from the candle surface.