
Candles are commonly used for decoration, in ceremonies, and to create a relaxing atmosphere. However, there are concerns about the potential dangers of inhaling candle smoke. While burning candles does release hydrocarbons and volatile organic compounds (VOCs) into the air, the general consensus is that the amount is not significant enough to pose a major health risk. Nevertheless, it is important to choose candles wisely and ensure proper ventilation. Paraffin wax candles, derived from petroleum, have been associated with the release of potentially harmful chemicals, including VOCs and phthalates, leading to concerns about lung toxicity and other health issues. On the other hand, natural candles made from beeswax, soy wax, or plant-based waxes are considered safer options, although even these alternatives may not be completely risk-free.
| Characteristics | Values |
|---|---|
| Danger to human health | Burning candles releases hydrocarbons and chemicals into the air, but the amount is not enough to pose a significant health risk to most people. |
| Paraffin wax | Many candles are made from paraffin wax, which releases potentially dangerous chemicals such as volatile organic compounds (VOCs) and phthalates. However, there is no definitive science proving that paraffin wax is more harmful than other types of wax. |
| Natural waxes | Candles made from natural sources, such as beeswax, soy wax, or other plant-based waxes, are considered safer options as they release fewer toxins and less soot. |
| Scented candles | Scented candles can trigger or exacerbate symptoms in individuals with asthma, allergies, or sensitivities to fragrances. However, there is no research suggesting that scented candles are more dangerous than unscented ones. |
| Dye | Candles that are dyed may contain benzidine, which is linked to an increased risk of bladder cancer. |
| Ventilation | It is recommended to use candles in well-ventilated areas to minimize the impact of the released chemicals and smoke. |
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What You'll Learn

Paraffin wax dangers
Paraffin wax is a common material used in candle-making. It is derived from petroleum, a by-product of gasoline production, and is cheaper to produce than soy wax. However, burning paraffin wax candles can release hazardous chemicals and black soot, which can have negative impacts on human health.
The Environmental Protection Agency (EPA) has concluded that burning paraffin wax emits harmful chemicals, including volatile organic compounds (VOCs) and phthalates. These chemicals pollute the air and can be inhaled, leading to potential health risks. The soot released by paraffin wax can also coat surfaces in your home. Sitting near a burning paraffin wax candle has been likened to sitting near the exhaust of a diesel engine.
The chemicals released from burning paraffin wax include known carcinogens such as benzene and toluene. Exposure to benzene has been linked to higher rates of leukemia, particularly acute myeloid leukemia, in workers in industries such as chemical, shoemaking, and oil refining. Toluene is a chemical that mainly affects the central nervous system, and exposure to it can result in headaches, nausea, dizziness, and insomnia. Researchers at South Carolina State University found that melting paraffin wax-based candles emitted toxic toluene and benzene, which were not present in soy candles.
In addition to the health risks posed by the chemicals released during burning, some older paraffin wax candles may have used wicks that contain lead. Lead exposure is linked to various health issues, including behavioural problems and learning disabilities in children. In 2003, the U.S. Consumer Product Safety Commission banned the use and sale of lead wicks in the U.S. and prohibited the import of lead-containing candles. However, imported candles may still contain lead wicks.
The smoke from burning paraffin wax candles is particularly dangerous for human health. It is known for lung toxicity and can cause lung inflammation, arteriosclerosis, and aging effects on chromosomes in the lungs and spleen. The smoke also contributes to environmental pollution, affecting not just the individual but everyone exposed to the polluted air.
To minimize the potential health risks associated with paraffin wax candles, it is recommended to use candles made from natural sources such as beeswax, soy wax, or other plant-based waxes. These alternatives release fewer dangerous chemicals and less soot, making them safer options for creating a relaxing ambiance.
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Natural waxes are better
Breathing in candle wax can be dangerous, and the type of wax used in candles can make a difference. Natural waxes are obtained from nature and are divided into vegetable and animal waxes. Vegetable waxes are derived from fat hydrogenation processes that convert liquid oils of vegetable origin into solid products. Examples include soybean, rapeseed, sunflower, coconut, and palm waxes. Natural waxes have a wide range of colours and odours, and they can be less expensive than paraffin wax, although some natural waxes can be very high priced.
Paraffin wax, on the other hand, is derived from petroleum, a by-product of gasoline production. Burning paraffin wax releases potentially harmful chemicals such as volatile organic compounds (VOCs) and phthalates. People exposed to these chemicals have reported headaches, shortness of breath, and coughing. Paraffin wax is also known to emit toxins and release harmful substances like soot, contributing to poor indoor air quality and environmental pollution.
Natural waxes, such as coconut wax, burn cleaner and release fewer toxins, improving indoor air quality. They are also biodegradable, derived from renewable resources, and produce minimal soot. Natural waxes are environmentally friendly, and their compatibility with essential oils offers a more therapeutic and luxurious candle experience.
While paraffin wax is cheaper and has a higher melting point, making it suitable for certain applications, natural waxes are a healthier and more sustainable option. They are also preferred by consumers who value low environmental impact, potentially offsetting the higher price of natural wax candles.
In conclusion, natural waxes are a better choice than paraffin wax for candles due to their health and environmental benefits, improved air quality, and therapeutic properties.
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Ventilation is key
While candles can be a great way to lift your mood and bring warmth to your home, it's important to be mindful of the potential risks associated with inhaling candle smoke. The key to minimizing any possible dangers is to ensure proper ventilation.
The type of wax also plays a role in the amount and kind of emissions generated. Paraffin wax, derived from petroleum, has been associated with the release of potentially harmful chemicals such as VOCs and phthalates. People exposed to these chemicals have reported adverse effects, including headaches, shortness of breath, and coughing. Therefore, opting for candles made from natural sources, such as beeswax, soy wax, or palm wax, is recommended. These alternatives tend to release fewer particulate matters and less soot, making them a healthier choice.
In addition to ventilation and choosing the right type of candle, there are a few other precautions you can take. Firstly, trim the wick if it exceeds 5 to 10 millimeters in length. Secondly, instead of blowing out the candle, use a candle snuffer or dip the wick into the wax to extinguish the flame. Lastly, be mindful of the dye used in some candles, as certain dyes may contain benzidine, which has been linked to an increased risk of bladder cancer. By following these simple guidelines, you can safely enjoy the ambiance and aroma of candles in your space.
While the impact of candle smoke on human health is a topic of ongoing discussion, there is no definitive research proving that exposure to candle smoke increases the risk of developing specific health conditions. However, it's always best to exercise caution and prioritize your well-being. By ensuring proper ventilation, selecting candles made from natural waxes, and following recommended candle-burning practices, you can minimize potential risks and fully enjoy the experience of burning candles.
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Scented candles and allergies
Scented candles can cause allergies, with about one in five people reporting reactions such as sneezing, a runny or stuffy nose, itchy eyes, sinus problems, headaches, hives or skin rashes, coughing, and wheezing. These symptoms are caused by the release of chemicals when candles are burned. The type and amount of chemicals released depend on the type of wax and wick used in the candle. Paraffin wax, which is derived from petroleum, releases volatile organic compounds (VOCs) and phthalates, which can cause headaches, coughing, and shortness of breath. Natural waxes like beeswax, soy wax, and palm wax are better alternatives as they produce less soot and release fewer chemicals.
The wicks of the candles are also important. In the past, candle wicks contained lead, which is toxic. However, lead wicks have been banned in the United States since 2003. Natural wicks made from cotton are recommended to minimize the release of chemicals.
In addition to allergies, scented candles can also trigger sinus infections, which are characterized by inflammation of the nasal cavities and mucus buildup. While sinus infections are typically caused by viruses, irritating chemicals from scented candles can act as triggers. The smoke released from burning candles can also affect individuals with smoke allergies, causing congestion in the chest.
To minimize the risk of allergies and sinus problems, it is recommended to use natural candles made from beeswax, soy wax, or palm wax, and to ensure proper ventilation when burning candles. Individuals with severe allergies or sinus issues should consider seeking professional medical advice and undergoing allergy testing to better understand their triggers and treatment options.
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Candle wicks matter
Paraffin wax, made from petroleum, is the most common type of wax used in candles. Research shows that burning paraffin wax releases potentially harmful chemicals such as volatile organic compounds (VOCs) and phthalates. People exposed to these chemicals have reported headaches, shortness of breath, and coughing. Paraffin candles are also linked to lung toxicity, lung inflammation, arteriosclerosis, and aging effects on chromosomes in the lungs and spleen.
However, some experts refute the idea that paraffin wax is inherently harmful when inhaled, especially when used as directed. The debate around paraffin wax also highlights its environmental impact, as it is derived from crude oil, a non-renewable resource.
As an alternative to paraffin, candles made from natural sources like beeswax, soy wax, or other plant-based waxes are recommended for minimizing the amount of particulate matter released into the air. These candles are considered safer and more sustainable options. Soy wax, in particular, is marketed as non-toxic and renewable, although the truth is more nuanced, and some soy candles may still contain small amounts of paraffin.
It's important to choose candles wisely and burn them responsibly. Opt for high-quality candles made from natural waxes, avoid those with added dyes, and ensure proper ventilation when burning any type of candle. Candle wicks should also be considered; in the United States, candle wicks no longer contain lead due to a ban imposed by the U.S. Consumer Product Safety Commission in 2003.
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Frequently asked questions
Yes, breathing candle wax is dangerous. Burning candles release hydrocarbons and other chemicals into the air, including volatile organic compounds (VOCs) and phthalates. However, the amount released is usually not enough to pose a significant health risk.
Yes, candles made from natural sources such as beeswax, soy wax, or other plant-based waxes are safer than those made from paraffin wax. Paraffin wax is derived from petroleum and releases more emissions, including potentially dangerous chemicals.
Breathing paraffin candle wax smoke can cause lung toxicity, lung inflammation, arteriosclerosis, and aging effects on chromosomes in the lungs and spleen. It can also lead to symptoms such as headaches, shortness of breath, and coughing.











































