The answer depends on the type of candle. For example, standard scented candles can release volatile organic compounds (VOCs) and particulate matter, which poses potential health risks.
However, soy candles are a much safer alternative. Because they’re made from natural, plant-based soy wax, they burn cleanly without releasing the same level of toxins or heavy soot found in paraffin candles. This means you can enjoy the cozy atmosphere and fragrance of a candle without worrying about polluting your home.
What Are Scented Candles?
Scented candles are candles that have been infused with fragrance oils or essential oils to release pleasant aromas when burned. Unlike unscented candles, their primary purpose isn’t just to provide light or ambiance, but also to enhance the atmosphere of a room through scent.
How Standard Scented Candles Release Their Particles
The combustion process of scented candles vaporizes wax and fragrance oils, producing VOCs such as benzene. As the candle burns, it releases particulate matter into the air. The quality of the wick, ingredients in the candle, and improper burning practices can increase these particulate emissions. When burned, scented candles produce small particles that become airborne, potentially leading to exposure through inhalation.
Why VOCs Matter?
VOCs, or volatile organic compounds, are gases released from scented candles. While typically found in low concentrations, VOCs can pose a risk if exposure is prolonged or in poorly ventilated spaces.
In fact, a study published in the Journal of Hazardous Materials found that scented candles can emit volatile organic compounds (VOCs) both before being lit and when burning, highlighting their potential impact on indoor air quality.
Why Should You Prioritize Soy Candles?
Soy candles pose less risk to your health and home environment. They contain fewer chemical compounds of concern, lowering the chance of respiratory issues or potential cancer risks associated with long-term exposure to certain VOCs.
While soy is an excellent choice, beeswax candles are another natural alternative worth considering.
Wick Types and Safer Burning
Soy candle wicks are generally considered safer because of how they burn and what they’re made from:
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Natural Wick Materials
Many soy candles are paired with cotton or wood wicks rather than metal-cored wicks. Metal-cored wicks (sometimes found in cheap paraffin candles) can contain trace amounts of lead or other heavy metals that release toxins when burned. Cotton and wood are cleaner, non-toxic options.
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Lower Soot Production
Soy wax burns at a lower temperature than paraffin. Combined with natural wicks, this helps minimize soot, smoke, and particulate matter released—meaning less indoor air pollution and fewer respiratory irritants.
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More Even Burn
Soy wax is softer and tends to create a more even melt pool. A wick that’s properly matched to soy wax doesn’t need to “work” as hard, which reduces incomplete combustion (a major source of harmful byproducts).
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Consistency & Safety Standards
Reputable soy candle makers often choose flat braided cotton or FSC-certified wooden wicks designed to self-trim and minimize mushrooming (the carbon buildup on wick tips). This lowers the chance of excess flame height or uncontrolled burn, making them safer for indoor use.
Ingredients in Soy Candles
Soy wax is made from hydrogenated soybean oil, offering a cleaner burn compared to petroleum-based alternatives. The ingredients in quality soy candles are typically non-toxic and often free from synthetic additives.
When shopping for soy candles, look for products that are:
- Phthalate-free
- Made with soy wax
- Scented with high-quality fragrance blends, free from harmful additives
Exactly what we offer at SOJA&CO.
Better Ventilation, Lower Risk
Soy wax candles offer better ventilation and a lower risk to indoor air quality because they burn at a cooler temperature and release fewer harmful byproducts compared to paraffin. This cleaner burn produces minimal soot and significantly fewer volatile organic compounds (VOCs), which means your home’s natural airflow or ventilation system can more easily disperse any emissions without overwhelming the space.
Since soy wax is plant-based and free of many petrochemical derivatives, its emissions are less likely to accumulate or cling to surfaces, reducing both pollution and the risk of respiratory irritation. The result is a candle that works in harmony with your indoor ventilation, keeping the air fresher, safer, and more breathable, even when multiple candles are lit at once.
Risk Factors And Best Practices
What Makes Certain Populations More Susceptible
People with these conditions might be especially sensitive to candle emissions:
- Asthma
- Allergies
- Other respiratory issues
Children and pregnant women need extra caution due to prenatal and pediatric exposures. Those with lung disease or chemical sensitivities could experience more severe reactions.
Monitoring Burn Times
We recommend keeping candle burning sessions short. Long burn times can lead to excessive soot buildup and tunneling. To take care of your candles, allow them to form a full melt pool each time you light them.
This practice even reduces waste and improves overall candle performance.
Using timers can help you track burn duration. It's still important to never leave a burning candle unattended, even with these precautions in place.
Avoiding Metals And Harmful Additives
Some synthetic fragrances and dyes can release harmful byproducts when burned. So make sure to look for candles labeled as "lead-free" or "metal-free" when shopping.
Of course, some manufacturers use refined paraffin that doesn't include these problematic substances!
Reducing Soot And Smoke
To minimize soot and smoke, try these tips:
- Trim wicks to about 1/4 inch before each use
- Avoid placing candles in drafty areas
- Invest in high-quality wax candles
Soot from candles can create problems for your indoor air quality. Without proper care, candles might emit more smoke than necessary. This can lead to headaches and other health issues. Remember, a clean-burning candle shouldn't release much visible smoke when you light it.
Choose SOJA&CO. for More Natural and Safe Scented Candles
Looking for candles that won't harm your health? We've got you covered. At SOJA&CO., our toxin-free, vegan soy candles are crafted with your well-being in mind. With over 20 unique scents and a personalized quiz, you'll find the perfect match for your home. Choose Canadian-made, eco-friendly candles that care for you and the planet.
Frequently Asked Questions About Scented Candles
Are Soy Candles More Natural Than Paraffin?
Yes, soy candles are more natural than paraffin candles. Soy comes from plants, while paraffin is derived from petroleum. Candles made of soy or beeswax tend to emit fewer toxic compounds when burned. Keep in mind that all candles release some VOCs. If you're looking for an eco-friendlier option, we suggest opting for high-quality natural wax candles..
Can Candles Trigger Headaches Or Allergies?
Scented or coloured candles can release irritants like benzene and formaldehyde. These substances might spark headaches or allergic reactions in some people. Even essential oils change chemically when heated. To reduce your exposure, we advise using candles in well-ventilated areas. You could also try limiting how long you burn them.
How Often Should I Air Out My Home After Burning Candles?
We recommend opening windows or turning on fans right after each candle session. Regular airing out helps disperse any built-up VOCs and soot. Remember to trim your wicks for safer burning. By following these tips, you'll create a fresher environment and enjoy your candles more safely.
