Brooke Martin
Candles are a popular way to create a cosy atmosphere, but are they harmful to our health? The short answer is yes, candles can be toxic. Burning candles release hydrocarbons and volatile organic compounds (VOCs) into the air, which can negatively impact indoor air quality. The amount of smoke and toxins released depends on the type of candle and how it is burned. For example, scented candles have been shown to produce more VOCs than unscented candles, and paraffin candles release more toxins than vegetable-based candles. While the concentration of toxins in candle smoke is generally low, it is still advisable to minimise smoke inhalation by burning candles in a well-ventilated area and keeping them away from drafts. Some people, such as those with asthma or allergies, may be more sensitive to candle smoke and should take extra precautions or avoid burning candles altogether.
| Characteristics | Values |
|---|---|
| Toxicity | Burning candles releases hydrocarbons, volatile organic compounds (VOCs), and particulate matter (soot) into the air, which may be harmful. However, the amount released is typically not enough to pose a significant health risk. |
| Health Risks | Inhaling candle smoke may cause headaches, eye irritation, shortness of breath, nose and throat irritation, and dizziness, especially in individuals with asthma, allergies, or sensitivities to fragrances. |
| Recommended Practices | Burn candles in a well-ventilated room, keep them away from drafts, and trim the wicks to minimize smoke production. Use natural or vegetable-based candles, as paraffin wax may release more harmful chemicals. |
| Alternatives | Flameless candles, ghee and oil lamps, wax melts, and battery-powered candles are recommended alternatives to minimize smoke and potential toxicity. |
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What You'll Learn
Scented candles can trigger allergies and asthma
While candle smoke is not a significant health risk for most people, scented candles can trigger allergies and asthma. A study conducted on university students in Saudi Arabia found that 24.8% of scented candle users experienced adverse symptoms, including headaches, coughs, shortness of breath, and wheezing.
The study also reported that individuals with asthma and chemical sensitivity were more susceptible to adverse effects from scented products, including scented candles, air fresheners, and scented laundry products. Similarly, a study of workers in California found that 3.8% of confirmed work-related asthma cases from 1993 to 2012 were linked to exposure to fragranced products. These findings suggest that the emission of volatile organic compounds (VOCs), phthalates, and particulate matter (PM) from scented candles may contribute to the development of respiratory and non-respiratory symptoms.
The fragrance in scented candles typically comes from essential oils, plant extracts, or synthetic fragrances. Synthetic fragrances are mostly derived from petroleum and animal sources, and they often contain chemicals that can have immediate or long-term health effects. High-quality candles that do not use dye or paraffin are generally considered safer.
To minimize the potential health risks associated with candle usage, it is recommended to burn candles in a well-ventilated area and keep them away from drafts to reduce smoke production. Trimming the wick to maintain a length of 5 to 10 millimeters can also help reduce smoke. Additionally, instead of blowing out a candle or using a snuffer, using a wick dipper to submerge the wick in the wax pool prevents smoke generation.
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Vegetable-based candles are healthier than paraffin wax candles
Burning candles releases hydrocarbons into the air, but the amount is not enough to pose a significant health risk to most people. However, it is always advised to choose your candles wisely and burn them responsibly. Vegetable-based candles are a healthier alternative to paraffin wax candles, and here's why:
Firstly, vegetable-based candles, such as those made from soy, rapeseed, and coconut, burn more cleanly than paraffin wax candles. They produce less soot and toxic chemicals, resulting in a cleaner smoke. While all candles release some smoke, vegetable-based candles can minimize the amount of particulate matter you breathe in. This is particularly important if you plan on using candles regularly, as inhaling any type of smoke can be unhealthy.
Secondly, vegetable-based candles are made from renewable and biodegradable sources. Coconut wax, for example, has a high melting point, making it ideal for container candles and massage wax products. Soy wax, on the other hand, has a lower melting point, allowing it to burn longer and create a larger pool of liquid wax around the wick. This results in a better aroma and the ability to spread fragrance more effectively throughout a room.
Additionally, vegetable-based candles do not release toxic carcinogens into the air, unlike paraffin wax candles. Paraffin wax, derived from petroleum oil, has been found to release toxic chemicals such as toluene during the combustion process. These toxic chemicals can cause health issues such as respiratory problems and, in the long term, even cancer.
While some sources argue that the amount of toxins in paraffin wax candles is not significant enough to pose a health threat, it is still advisable to opt for vegetable-based candles as a healthier and more environmentally friendly option.
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Burning candles releases hydrocarbons
While the combustion of candle wax does release hydrocarbons, the amount released is not enough to pose a significant health risk to most people. However, it is important to choose and burn candles wisely and responsibly. Burning candles in a well-ventilated area can help minimize the amount of smoke and particulate matter inhaled, reducing potential health risks.
The type of candle also matters. Candles made from natural sources, such as palm stearin, soy wax, or beeswax, produce less soot and toxic chemicals than those made from paraffin wax. Soy candles, for example, produce less soot and certain compounds compared to paraffin candles, but they may produce more of other compounds. It is worth noting that some people may have allergic reactions or asthma attacks triggered by scented candles, regardless of their toxicity.
While burning candles do release hydrocarbons, following simple guidelines, such as proper ventilation and choosing the right type of candle, can help minimize potential health risks.
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Inhaling any type of smoke is unhealthy
It is important to remember that inhaling any type of smoke is unhealthy. While candles might not be as harmful as other sources of smoke, they can still release chemicals and pollutants into the air that can be detrimental to your health. The key is to minimise your exposure to any type of smoke, including candle smoke, and to ensure you are burning candles responsibly.
Burning candles release hydrocarbons into the air, as well as volatile organic compounds (VOCs) and particulate matter (soot). While the amounts released are generally not considered to pose a significant health risk, they can contribute to overall poor air quality in your home. The effects of inhaling these chemicals can include respiratory issues, eye and throat irritation, headaches, and even more acute health problems for those with pre-existing conditions.
The type of candle you burn can also make a difference. For example, soy candles produce less soot and toxic chemicals than paraffin candles. Vegetable-based candles are also recommended over paraffin candles, as they do not release unwanted chemicals into the air. Additionally, scented candles have been shown to produce more VOCs than unscented candles, so they may be more likely to trigger respiratory issues and allergies.
To minimise the potential health risks associated with burning candles, it is recommended to follow some simple guidelines. Firstly, always burn candles in a well-ventilated area to reduce the amount of smoke you inhale. Keep candles away from drafts, as this can help decrease the amount of smoke they produce. Avoid burning candles for more than four hours at a time, and never leave a candle unattended or burning while you sleep. Instead of blowing out a candle, use a wick dipper or candle snuffer to avoid generating smoke.
By following these guidelines and choosing your candles wisely, you can enjoy the ambiance and fragrance of candles while minimising any potential health risks associated with inhaling candle smoke.
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Candle wicks no longer contain lead
Burning candles can release hydrocarbons into the air, but the amount is not enough to pose a significant health risk. However, inhaling any type of smoke can be unhealthy, so it is recommended to burn candles in a well-ventilated area to minimise the amount of smoke you breathe in.
Prior to the ban, a small percentage of candles sold contained lead-cored wicks, which emitted lead levels in excess of 3,000 micrograms per hour—a rate that could contribute to elevated lead levels in the blood. The CPSC's ban applies to all domestic and imported candles, and safe alternatives to lead-cored wicks, such as zinc, synthetic fibres, cotton, and paper, are now commonly used by candle manufacturers.
While candle wicks no longer contain lead, it is still important to choose your candles wisely and burn them responsibly. Some people may experience allergic reactions or asthma attacks from scented candles, and certain types of candles may produce more soot and toxic chemicals than others. For example, soy candles produce less soot and toxic chemicals than paraffin candles. Additionally, keeping candles away from drafts can help reduce the amount of smoke they produce.
To minimise potential risks, it is recommended to follow candle safety guidelines, such as trimming the wick if it exceeds 5 to 10 millimetres, avoiding burning candles for more than four hours at a time, and using a wick dipper or candle snuffer instead of blowing out the candle to prevent smoke and wax splatter.
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Frequently asked questions
Burning candles does release hydrocarbons and volatile organic compounds (VOCs) into the air, but the amount released is not enough to pose a significant health risk to most people.
Scented candles have been shown to produce more volatile organic compounds than unscented candles, but neither variety poses a significant health risk. However, scented candles can trigger or exacerbate symptoms in individuals with asthma, allergies, or sensitivities to fragrances.
Flameless candles are a good alternative to scented candles as they do not pose a fire risk. Wax melts are also a good substitute if you buy scented candles for the smell.
Candles made from natural sources are the best option for minimizing the amount of particulate matter you breathe in. Soy candles produce less soot and toxic chemicals than candles made from paraffin. Vegetable-based candles have also been shown to not produce toxic chemicals.
To minimize the amount of smoke you inhale from candles, burn your candles in a well-ventilated room and keep them away from drafts.
