What Is Candle Tunneling? Causes, Fixes & How to Prevent It

Candle tunneling is a common issue for candle lovers. It occurs when a candle burns straight down the middle, leaving a ring of hard wax around the edge. Not only does this shorten the candle’s lifespan, but it also wastes wax and diminishes the visual appeal. Luckily, there are easy ways to fix and prevent candle tunneling altogether.

🔍 What Is Candle Tunneling?

Candle tunneling happens when the wax near the wick melts but the outer wax remains solid. Over time, the candle forms a narrow tunnel and becomes difficult to relight. This typically results from improper burning habits or a mismatched wick size.

⚠️ Causes

Understanding what causes candle tunneling is key to avoiding it. The most common reasons include:

• Short initial burn: The first burn sets the candle’s “memory.” If it’s too short, a tunnel forms.
• Wrong wick size: A wick that is too small for the candle’s diameter won’t generate enough heat.
• Uneven surface or drafts: Airflow or uneven placement can cause one side to burn faster.
• Poor wax blend: Inconsistent wax quality can affect how evenly it melts.

Transitioning to proper candle care can make a big difference.

🛠️ How to Fix

Fortunately, a tunneled candle isn’t always ruined. Try one of the following solutions:

• Foil method: Wrap aluminum foil around the candle top, leaving a hole in the center. This traps heat and melts the outer wax.
• Hair dryer or oven method: Gently warm the surface with a hair dryer or place the candle in a warm oven for a few minutes.
• Candle warmer: For severely tunneled candles, a warmer can melt wax evenly from the bottom up.

Each of these fixes can extend the life of your favorite candle.

✅ How to Prevent Candle Tunneling

The best way to deal with candle tunneling is to prevent it from happening in the first place. Here are our top tips:

• Burn for at least one hour per inch of candle diameter on the first burn.
• Always trim your wick to about 5mm before lighting.
• Avoid placing candles near fans or windows, as drafts can cause uneven burning.
• Use high-quality handmade candles like those in our crystal candle collection, designed to burn cleanly and evenly.

Following these tips ensures a smooth, even burn every time.

💡 Final Thoughts

Candle tunneling might seem like a minor issue, but it can ruin the experience of a beautifully crafted candle. Now that you understand what candle tunneling is and how to deal with it, your candles can burn brighter and longer.

For more candle care tips and design inspiration, follow us on Instagram and explore our handmade candle collection.