How do I fix a candle-tunnel ?
Aluminum Foil Method
Aluminum foil around the top of the candle container will hold heat in. This heat will melt the rest of the surface wax and allow the candle to begin burning as it should.
Heat Gun Method
You can easily melt the excess wax with a heat gun and pour it out, or at least level out the surface of the candle. Never pour wax into a sink, and be careful - it’s still hot wax!
Scoop Out Excess Wax
You can always take a butter knife or a spoon and scrape away the excess trash and then scoop it into the garbage, or an empty vessel with a wick in it. Eventually you could have a whole new candle :).
Use A Blowdryer
A blowdryer serves in place of a heat gun. It will allow you to melt, or soften the wax so that you can remove it. Creating a smooth surface for the candle.
Once you have removed enough wax to make the surface of the candle smooth, and the wick is of the correct length, you are ready to light your candle again.
This time let the candle burn until the wax completely melts from one side of the container to the other. Once the surface of the candle completely melts, then you can blow out the candle.