Soy vs Paraffin: Which Candle Wax Burns Cleaner?
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When shopping for scented candles, you may have noticed a growing debate around the type of wax used. Two of the most common options are soy wax and paraffin wax, but which one actually burns cleaner—and what does “clean” really mean when it comes to candles?
In this blog, we’ll explore the differences between soy and paraffin wax, break down their pros and cons, and help you make an informed choice for a cleaner, healthier burn in your home.
What Is Paraffin Wax?
Paraffin wax is a petroleum by-product, created during the refining process of crude oil. It has long been used in the candle industry due to its low cost and strong scent throw.
Pros:
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Very affordable
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Excellent scent throw
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Available in a wide range of forms and colours
Cons:
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Derived from fossil fuels
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Produces more soot when burning
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May release potentially harmful toxins in small amounts
What Is Soy Wax?
Soy wax is made from the oil of soybeans, making it a natural and renewable resource. It’s popular among eco-conscious brands and consumers.
Pros:
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Burns cleaner with less soot
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Biodegradable and renewable
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Longer burn time compared to paraffin
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Often used in vegan or natural candles
Cons:
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Slightly more expensive
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Scent throw may be milder than paraffin
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Sensitive to temperature fluctuations
So, Which Wax Burns Cleaner?
Soy wax burns significantly cleaner than paraffin. It produces less black soot, doesn’t rely on petroleum, and doesn’t release the same level of pollutants. While paraffin may deliver a stronger initial scent, soy offers a more natural and sustainable way to fragrance your space.
Which Is Better for Your Home?
If you're concerned about indoor air quality, sustainability, or have allergies or sensitivities, soy wax is the clear winner. Not only does it minimise airborne soot, but it also supports a more eco-friendly lifestyle.
At Rosemary Jane UK, we proudly use soy wax in all our hand-poured candles—blending relaxation, beautiful fragrance, and clean burning into every jar.
Frequently Asked Questions
1. Does paraffin wax release toxins?
Yes, paraffin wax can release small amounts of chemicals like benzene and toluene when burned, which are considered potentially harmful in high concentrations.
2. Is soy wax really better for the environment?
Yes, soy wax is biodegradable, renewable, and derived from a natural plant source, making it more environmentally friendly than paraffin.
3. Which wax has a longer burn time?
Soy wax typically burns slower than paraffin, meaning your candle lasts longer—even if it has a slightly softer scent.
4. Can soy candles still produce soot?
All candles can produce some soot, especially if the wick is too long. However, soy wax produces noticeably less soot than paraffin candles.
5. Are soy candles better for people with allergies?
Yes, many people with sensitivities prefer soy wax because it's cleaner-burning and less likely to trigger respiratory irritation.
Final Thoughts
When it comes to choosing between soy vs paraffin, the cleaner burn, eco-friendliness, and longer life of soy candles make them the better choice for most modern homes. Whether you're after a calming spa experience or simply want a more natural way to scent your space, soy wax ticks all the right boxes.