We love wooden wicks, but sometimes they can be problematic. As a natural element they are not always the most predictable, sometimes refusing to stay lit. Because we feel they are very important to our Rituals line, I spent a night testing methods of candle resurrection.
Soy wax burns slowly, sometimes slower than the wick is burning itself down and this can cause issues with staying lit. First we want to make sure the top level is flat and we want the wick to be at least 1/4 above the wax level. You can use a spoon or butter knife to scrape out enough wax to achieve this (soy wax is easily cleaned off). Finally, use a heat tool or a hair dryer to melt the top layer of wax. Unfortunately a hairdryer will probably get some wax splatter on it during this process, but as we mentioned soy is easily cleaned off. Stay the course! When you have a small pool of melted wax light the wick.
Let there be light!