Lance Carson
There is an ongoing debate about whether burning candles is harmful to health. Some sources claim that scented candles release potentially harmful toxins, such as volatile organic compounds (VOCs), benzene, and formaldehyde, which are known carcinogens. However, other sources refute this claim, stating that the amount of toxins released is too low to pose a significant health risk. While it is important to choose candles wisely and burn them responsibly, there is little scientific evidence to suggest that scented candles are dangerous when used occasionally and in well-ventilated areas.
| Characteristics | Values |
|---|---|
| Toxicity | There is little evidence to suggest that scented candles are toxic, with studies showing that the amount of vapour and potentially harmful chemicals released from a burning candle is low. |
| Health Risks | Some people have allergic reactions to scented candles, and they can trigger asthma attacks. Burning candles can also release hydrocarbons and other chemicals that may be harmful in high doses. |
| Safe Usage | To minimise soot and toxic chemical release, it is recommended to burn candles in well-ventilated areas, keep wicks trimmed, and ensure the wax pool is free of debris. Soy, beeswax, and palm wax candles produce less soot and are better alternatives. |
| Lead Wicks | Candle wicks in the US and some other countries are banned from containing lead due to the risk of lead poisoning. However, imported candles may still contain lead, and other metals like zinc may be present in wicks. |
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What You'll Learn
Paraffin wax candles are toxic
There is a lot of confusion and debate about the toxicity of paraffin wax candles. Paraffin wax is a hard, translucent substance derived from a mixture of solid straight-chain hydrocarbons. It is a by-product of the process of refining crude oil into fuels like gasoline. It is affordable, burns consistently, holds fragrance and colour well, and has an attractive finish.
Some sources claim that paraffin wax candles are toxic and release harmful, cancer-causing chemicals into the air. A study conducted at South Carolina State University found that the combustion process of paraffin candles releases toxic chemicals such as toluene, a benzene derivative, and formaldehyde, which are known carcinogens for humans. The same study also concluded that burning these candles frequently will cause dangerous pollutants to drift in the air, which can be harmful when inhaled. Another source mentions that burning paraffin wax releases potentially dangerous chemicals such as volatile organic compounds (VOCs) and phthalates, which have caused headaches, shortness of breath, and coughing in some people.
However, other sources claim that paraffin wax is non-toxic, even when burned. They argue that it takes a lot more heat to release any toxic fumes from paraffin wax. Some claim that the "paraffin is toxic" sentiment may have originated due to valid concerns about less refined paraffin waxes, and that fully refined paraffin wax is chemically very different and non-toxic. In fact, studies have shown that paraffin candles are no more toxic than candles made with other waxes, and that the combustion byproducts of candles made with paraffin, soy, stearin, and beeswax are virtually identical in composition and quantity.
To conclude, while there is conflicting evidence about the toxicity of paraffin wax candles, it is important to note that burning any type of candle releases chemicals and hydrocarbons into the air, and it is always a good idea to minimise your intake of any type of smoke. Choosing candles made from natural sources, such as soy, stearin, or beeswax, and burning candles in well-ventilated areas can help minimise the amount of soot and particulate matter released into the air.
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Safer alternatives to perfumed candles
There is a lot of debate about whether scented candles are toxic and harmful to health. While some articles claim that scented candles release potentially harmful toxins, there is little scientific evidence to support these claims. Research suggests that the dose of toxic chemicals released by scented candles is far below what is considered harmful to health.
However, if you are looking for safer alternatives to scented candles, here are some options:
- Essential oil diffusers: Essential oil diffusers are a healthy and eco-friendly alternative to scented candles. They use jet nozzles to create a steam of pressurized air, which breaks down essential oils into tiny particles that are easily released into the air as mist.
- Reed diffusers: Reed diffusers are vase-like vessels filled with fragrance oil and thin reeds. The reeds soak up the fragrance until it reaches the top and then evaporates into the air. They offer a longer-lasting fragrance of up to a year and are low-maintenance.
- Room mists: Room mists are convenient and eco-friendly alternatives to scented candles. They offer a burst of fresh fragrance and can be paired with reed diffusers for longer-lasting scents.
- Wax melts: Wax melts are similar to traditional scented candles but without the flame and VOCs. They are heated at low temperatures, resulting in fewer combustion byproducts.
- Incense: Incense burning does not produce VOCs or other toxic chemicals, making it one of the best alternatives to scented candles. However, it creates smoke, which might be an issue for some people.
- Ghee and oil lamps: Ghee and oil lamps, such as diyas, are smoke-free and less toxic alternatives to scented candles. They are commonly used in religious traditions across the Indian subcontinent.
- Unscented candles: If you are concerned about the potential toxins in scented candles, you can opt for unscented candles made from natural sources such as beeswax, soy wax, or palm wax. These candles produce less soot and toxic chemicals than paraffin candles.
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Lead wicks and their dangers
Candle wicks containing lead pose a significant health risk, especially to children. When a candle burns, the lead in the wick can be released into the air and inhaled, leading to lead poisoning. Lead poisoning can cause severe health issues, including headaches, shortness of breath, and coughing. In children, lead poisoning can have serious long-term effects on brain development, behaviour, and learning abilities.
In recognition of these dangers, many countries have taken steps to ban the use of lead in candle wicks. In 2003, the U.S. Consumer Product Safety Commission (CPSC) voted to prohibit the manufacture, import, and sale of candles with lead wicks. This decision was made after a CPSC investigation found that a small percentage of candles sold still contained lead-cored wicks, despite a voluntary industry agreement in the 1970s to remove lead. Australia was the first country to implement such a ban.
The presence of lead in candle wicks is not always obvious, but there is a simple test to check for it. By rubbing an unburnt wick on a piece of white paper, a light grey pencil-like mark indicates the presence of lead. While lead wicks may no longer be a concern in countries with strict regulations, it is essential to remain vigilant, especially when purchasing candles from unregulated markets or unknown sources.
To minimize potential health risks, it is recommended to choose candles made from natural sources, such as soy, palm stearin, or beeswax, and to burn them responsibly. This includes trimming wicks to a suitable length, avoiding drafty areas, and ensuring proper ventilation during and after burning a candle.
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Allergic reactions to scented candles
While scented candles are a popular way to create a pleasant atmosphere, there are concerns about their potential toxicity and health effects, especially for those with allergies or asthma.
The type of wax used in scented candles can also impact the likelihood of allergic reactions. Paraffin wax, a common ingredient in scented candles, has been criticised for producing harmful chemicals when burned, such as benzene, toluene, and naphthalene, which are known carcinogens. However, the amount of exposure from typical candle use is likely below harmful levels, and independent researchers have supported these findings.
To minimise potential allergic reactions, it is recommended to use candles made from natural, sustainable materials like beeswax or soy wax, which produce fewer microparticles and toxic chemicals associated with breathing problems. These candles burn more cleanly and can even emit negative ions that improve air quality. Additionally, ensuring proper ventilation and keeping wicks trimmed to about a quarter of an inch can help reduce the amount of soot released.
While scented candles can trigger allergic reactions in some individuals, taking appropriate precautions and choosing natural alternatives can help minimise these effects.
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Burning candles and air quality
There is an ongoing debate about whether burning candles, especially scented candles, are bad for your health and air quality. Some sources claim that candles release potentially harmful toxins, such as volatile organic compounds (VOCs), benzene, and formaldehyde, which can be unsafe to inhale at high doses. However, other sources refute this claim, stating that the amount of these toxins released by candles is too low to pose a significant health risk.
When candles burn, they release chemicals and particles into the air, including hydrocarbons, water vapour, and carbon dioxide. While these emissions can be dangerous, studies suggest that the exposure to these chemicals from candle burning is too low to present a direct health hazard. In fact, a study published in 2014 found that even after four hours of continuous candle burning in a closed indoor space, the air quality remained within healthy levels set by the World Health Organization.
To ensure good air quality and minimize the release of soot and toxic chemicals, it is recommended to choose candles wisely and burn them responsibly. Soy candles, for example, produce less soot and toxic chemicals than paraffin candles. Additionally, it is advised to burn candles in well-ventilated areas, keep wicks trimmed, and ensure the pool of wax is free of debris.
While the debate about the toxicity of scented candles continues, it is important to note that some individuals may have allergic reactions or sensitivities to certain fragrances or types of candle wax. It is always recommended to pay attention to any physical reactions and take appropriate action if irritation or discomfort occurs.
If you are concerned about the potential negative impact of burning candles on air quality and your health, there are alternative options available, such as flameless candles, wax melts, or aroma diffusers with essential oils. These alternatives can provide similar benefits without the potential risks associated with candle burning.
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Frequently asked questions
While burning perfumed candles, they do release particles into the air, including volatile organic compounds (VOCs). However, the amount released by scented candles does not approach unsafe levels. Therefore, they are almost certainly not toxic.
If you'd rather avoid scented candles altogether, you could try ghee and oil lamps, flameless candles, wax melts, aroma diffusers, or essential oils and an electric diffuser.
Soy, stearin, beeswax, or palm wax candles are considered less toxic than paraffin wax candles.
Some people have allergic reactions to scented candles. For some, scented candles can even trigger asthma attacks.
To minimize the amount of soot released by candles, burn them in a well-ventilated area, keep wicks trimmed, and ensure that the pool of wax is free of debris.
