Quick Answer
Candle tunneling happens when the wax pool doesn't reach the jar edge on the first burn. Fix it by letting your soy candle burn long enough to create a full melt pool, and trim the wick before each use.
Why Soy Candles Are Prone to Tunneling
Soy wax has a lower melting point than paraffin, which means it can be more sensitive to drafty rooms or short burn times. If you snuff out your candle before the wax melts all the way to the glass, a tunnel forms around the wick. This leaves wasted wax on the sides and shortens the candle's overall burn life.
The good news: with a few simple habits, you can avoid tunneling entirely and enjoy every drop of your natural soy candle.
How to Diagnose and Fix Candle Tunneling
- Symptom: After burning your soy candle for a few hours, you see a deep hole around the wick while unmelted wax remains along the glass walls.
- Likely Cause: The first burn was too short. Soy wax has a memory: it only melts to the point it reached before. If you extinguish it before the melt pool reaches the edge, it will tunnel on every subsequent burn. Always burn your candle long enough on the first use so the liquid wax touches the entire rim of the jar. For most small soy candles, that means 2–4 hours.
- Corrective Action: If tunneling has already started, wrap aluminum foil around the rim of the jar, leaving a small opening over the wick. Burn the candle for 2–3 hours. The foil traps heat and helps melt the wax at the edges, evening out the pool. Remove foil carefully once the wax is level. After the pool evens out, trim the wick to 1/4 inch before your next burn to keep the flame small and steady.
- When to Stop or Choose Another Option: If the tunnel is deeper than half the candle's height or the wick is drowning in melted wax, it's safer to discard the candle rather than risk a cracked jar or uneven flame. You can repurpose the leftover wax as a wax melt in a warmer. Safety first: never leave a burning candle unattended, and stop using if the glass is damaged.
Candles That Help You Burn Evenly
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Compassion Flower Soy Candle Large: Soy Candle brings the scent of the garden to your home with a soy wax that burns cleanly and up to 33 hours of burn time. A longer burn time gives you more flexibility to let the candle pool fully without worrying about running out too fast.
Compassion Flower Soy Candle Large
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Basil Soy Candle Small: Scented candle made from soy wax, vegetable wax and other thoughtfully chosen ingredients. The blend of soy and vegetable wax helps the candle melt more evenly, reducing the chance of tunneling on subsequent burns.
Basil Soy Candle Small
