We’ve all been there: you buy a beautiful new candle, light it up, and a few hours later, you notice a thick, hard ring of wax clinging to the edges of the jar. Instead of a flat, even melt pool, your flame is sinking into a deep hole in the center.
This is called candle tunneling. Not only does it look messy, but it drastically shortens the lifespan of your candle and wastes perfectly good wax. Fortunately, you can fix candle tunneling using a few simple household items.
If your candle is not burning to the edge, don’t throw it away! Here is exactly why your candle is burning unevenly, how to fix candle tunneling right now, and how to make a candle burn evenly every single time.
Why Is My Candle Not Burning Evenly?
Understanding why wax melts unevenly is the key to preventing it. Tunneling usually comes down to two main culprits: the wick size, and a phenomenon known as “wax memory.”
The Science of “Wax Memory”
The number one reason for candle tunneling is failing to let the wax melt completely during the very first use. Wax has a “memory.”
The first time you light a candle, it sets the boundary for every future burn. If you blow the candle out before the melted wax pool reaches the outer edges of the jar, the wax “remembers” that ring.
The next time you light it, the candle will only melt down to that exact same diameter, leaving the outer wall of hard wax untouched.
The Wick is Too Small
Mass-produced candles often cut costs by using poor-quality, improperly sized wicks. If the wick is too small for the jar’s diameter, it simply cannot generate enough heat to melt the wax to the edge, no matter how long you let it burn.
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How to Fix Candle Tunneling (3 Proven Methods)
If your candle has already tunneled, you can still save it. Learning how to fix candle tunneling is easy. Here are the three best methods to even out a candle, depending on how deep the hole is.
1. The Aluminum Foil Method (Best for Deep Tunnels)
This is the most effective way to fix candle tunneling if your flame has sunken deeply into the wax. The foil traps the heat, forcing the hard wax on the edges to melt down into the center.
- Light your candle as you normally would.
- Wrap aluminum foil carefully around the top of the candle vessel.
- Fold the foil inwards like a dome, leaving a 1-inch hole in the center directly above the flame. This allows oxygen to keep the flame alive.
- Let it burn for 1 to 2 hours. The foil reflects the heat back down, melting the stubborn edge wax into a smooth, even pool.
- Remove the foil carefully. Warning: The foil and the jar will be extremely hot! Let the candle cool completely before touching it.
2. The Hair Dryer Method (Best for Shallow Tunnels)
If your candle is just starting to tunnel, a hair dryer is the fastest way to fix candle tunneling and restore an uneven burn.
- Do not light the candle. 2. Set your hair dryer to its highest heat but its lowest fan setting. (If the fan is too high, you will blow melted wax all over your counter!)
- Hover the dryer over the top of the candle, moving it in a slow, circular motion.
- Wait for the wax to level. Once the top layer of wax has completely melted and leveled out to the edges, turn off the hair dryer.
- Let it harden. Allow the wax to cool and solidify completely before trimming the wick and relighting.
3. The Oven Method (Best for Fixing Multiple Candles)
If you have a batch of candles that burned unevenly, you can fix candle tunneling on all of them at once using your oven.
- Preheat your oven to a very low temperature (around 175°F or 80°C).
- Place your unlit candles on a baking sheet.
- Heat for 5 minutes. Place the tray in the oven and keep a very close eye on them. You want the surface to melt and level out, but you do not want the wax to bubble or smoke.
- Remove and cool. Once the surface wax is even, carefully remove the baking sheet using oven mitts and let the candles cool at room temperature.
How to Make a Candle Burn Evenly (Prevention Tips)
Of course, the best way to fix candle tunneling is to stop it before it ever starts. Here is how to get a candle to burn evenly from the very first light.
Use a Candle Topper: A metal candle topper sits on the rim of your jar and acts like a mini roof, keeping the heat inside the vessel and ensuring the wax melts evenly.
Master the “First Burn”: The first time you light a candle, you must let it burn for 2 to 3 hours. Do not blow it out until the entire surface layer of wax has melted to the edges of the jar to set a proper wax memory.
Trim Your Wick: According to the National Candle Association, you should always trim your wick to 1/4 inch before every single burn. A trimmed wick controls the size of the flame, preventing soot and ensuring a steady, even heat distribution.
Keep Away from Drafts: A flickering flame caused by an AC vent, open window, or fan will distribute heat unevenly, causing one side of the candle to melt faster than the other.
Bonus: How to Remove Leftover Wax from a Candle Holder
Once you’ve burned your candle down to the last half-inch, it’s time to retire it. But don’t throw away that beautiful jar! Here is the easiest way to remove wax from a candle holder so you can repurpose it.
- Boil water on your stove or in a kettle.
- Pour the boiling water directly into the unlit candle jar, leaving about an inch of space at the top.
- Let it sit. The hot water will melt the remaining wax. Because wax is lighter than water, it will float to the top.
- Remove the wax disc. As the water cools, the wax will harden into a solid disc at the top of the jar. Simply pop it out and discard it.
- Wash the jar with warm, soapy water to remove any soot, and your vessel is ready to be used as a makeup brush holder, a small planter, or a pen cup!
Now that you know how to fix candle tunneling, are you ready to upgrade your home fragrance? Shop our collection of non-toxic, handmade soy candles, poured with premium wax and perfectly sized wicks for a flawless burn every time.
Also Read >>Candle Safety Tips for Your Home
