Chloe Adams
Candles are loved for their ability to create a cosy atmosphere, soothing light, and pleasant fragrances. However, burning candles, especially those made from paraffin wax, can release soot and Volatile Organic Compounds (VOCs) into the air, contributing to indoor air pollution and potentially causing adverse health effects. VOCs are chemicals that easily become vapours or gases at room temperature, and common VOCs released by candles include formaldehyde, benzene, toluene, and acetaldehyde. While the link between scented candles and health issues is not entirely clear, there are concerns about the potential risks associated with prolonged exposure to these compounds, including an increased cancer risk and respiratory problems. As a result, consumers are increasingly seeking healthier alternatives, such as soy, beeswax, or coconut wax candles, and embracing natural fragrances from essential oils to maintain a fresh-smelling space without compromising indoor air quality and personal health.
Do candles absorb VOCs?
| Characteristics | Values |
|---|---|
| Candles releasing VOCs | Yes |
| Candles absorbing VOCs | No evidence |
| Types of candles releasing VOCs | Scented candles, paraffin wax candles |
| Chemicals released by candles | Benzene, toluene, formaldehyde, acetaldehyde, phthalates |
| Health effects of VOCs in candles | Headaches, shortness of breath, coughing, allergies, asthma attacks, skin problems, cancer risk |
| Ways to reduce VOC exposure from candles | Use soy, beeswax, or coconut wax candles, fragrance-free or naturally scented candles, cotton or wood wicks, trim wicks, burn in ventilated areas |
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What You'll Learn
Paraffin wax candles emit VOCs
Candles are often used to create a cosy atmosphere, provide a soothing light, and fill a room with pleasant fragrances. However, while they enhance our living spaces, they may also pose hidden health risks. Many household products, including candles, can emit volatile organic compounds (VOCs) that negatively impact indoor air quality and our health.
Paraffin wax, a petroleum byproduct, is a common material used in candle production. To create paraffin wax, petroleum waste is chemically bleached, deodorised, and made into wax. When burned, paraffin wax can release toxic VOCs into the air, including known carcinogens. These toxic compounds include formaldehyde, benzene, toluene, and acetaldehyde, which are linked to various health issues. Formaldehyde, for example, has been associated with an increased risk of cancer.
Additionally, burning paraffin wax produces soot composed of particulate matter such as PM2.5 and ultrafine particles that can remain suspended in the air for hours. These particles contribute to indoor air pollution and can cause or exacerbate respiratory issues, allergies, and asthma.
The release of VOCs from paraffin wax candles is not limited to when they are lit. A 2005 study published by the University of South Florida showed that paraffin wax candles emit low levels of benzene even when they are not burning. This means that simply having these candles in an enclosed space can contribute to indoor air pollution.
To minimise the potential harm of burning candles, it is recommended to opt for natural wax alternatives such as soy, beeswax, or coconut wax. These natural wax candles generally produce fewer harmful emissions and are made from renewable resources. It is also important to choose candles with cotton or wood wicks instead of metal cores, as the latter can release heavy metals when burned.
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Health risks of VOCs
Volatile Organic Compounds (VOCs) are emitted as gases from certain solids or liquids. They are found in thousands of products we use every day, including paint, varnish, wax, cleaning products, and cosmetics. VOCs are also released from burning candles, particularly those made from paraffin wax, and can negatively impact indoor air quality and our health.
The ability of organic chemicals to cause health effects varies, with some VOCs being highly toxic and others having no known health effects. Concentrations of VOCs are consistently higher indoors than outdoors, and they can be emitted during the use of products containing them or even when stored. Some immediate symptoms that people may experience after exposure to VOCs include eye, nose, and throat irritation, headaches, nausea, dizziness, and difficulty breathing.
Long-term exposure to VOCs can lead to more serious health problems, including liver, kidney, and central nervous system damage, and some VOCs are linked to cancer. VOCs may also worsen symptoms for people with asthma and COPD.
To reduce exposure to VOCs, it is recommended to read product labels, avoid or limit the use of products with harmful ingredients, safely dispose of unwanted products, and increase ventilation when using products that may contain VOCs. Choosing candles made from natural waxes such as soy, beeswax, or coconut wax, and using wicks without metal cores, can also help minimize exposure to VOCs.
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Natural alternatives to paraffin wax candles
Candles are loved for their soothing light and fragrance, but traditional paraffin wax candles can release harmful volatile organic compounds (VOCs) and toxins, such as formaldehyde, benzene, and toluene, which may negatively affect your health and contribute to indoor air pollution. To avoid these potential risks, opt for natural alternatives to paraffin wax, such as:
Soy Wax Candles
Soy wax is a natural, renewable resource derived from soybeans. It is biodegradable and does not contain harmful chemicals, making it a popular eco-friendly alternative to paraffin wax. Soy wax candles burn slower and more evenly, resulting in a longer burn time and better value. They also produce less soot and fewer toxic chemicals, ensuring a cleaner burn. Additionally, soy wax effectively holds and disperses fragrance, providing a pleasant and consistent aroma.
Beeswax Candles
Beeswax is another natural alternative to paraffin wax. Beeswax candles are known for their air-purifying benefits and generally produce fewer harmful emissions than paraffin candles.
Coconut Wax Candles
Coconut wax is a natural wax option that burns cleaner and produces fewer harmful byproducts than paraffin wax.
Essential Oils and Sustainable Materials
Choose candles that use 100% essential oils for fragrance instead of synthetic fragrances. Sustainable materials and natural ingredients ensure a beneficial experience, especially for those interested in aromatherapy.
Proper Wicks
Select candles with cotton or wood wicks instead of metal cores, as burning metal wicks can release heavy metals. Always trim the wick to about a quarter of an inch before lighting to reduce soot production.
By embracing these natural alternatives, you can create a healthier and more pleasant living environment without compromising on fragrance or ambiance.
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Synthetic fragrances in candles
Candles are loved for their ability to create a cosy atmosphere, soothing light, and pleasant fragrances. However, while they enhance living spaces, they may also pose hidden health risks. Volatile Organic Compounds (VOCs) emitted from many candles can negatively impact indoor air quality and health. VOCs can originate from the wax, fragrance, and wicks of candles. Common VOCs released by burning candles include benzene, toluene, formaldehyde, and acetaldehyde, which are linked to various health issues. Formaldehyde, for instance, has been linked to more serious health problems including cancer.
Synthetic fragrances are created in laboratories using a combination of chemicals, attempting to replicate the scent of natural essential oils. They are known to contain potentially harmful chemicals, such as phthalates and allergens, which can be detrimental to human health and the environment. Natural essential oils, on the other hand, are extracted from botanical sources, such as flowers, leaves, stems, and roots, through methods like steam distillation and cold pressing. They are the purest form of aroma that nature has to offer, containing the true essence of plants in their scent.
Synthetic fragrances lack the complexity, authenticity, and therapeutic benefits of natural essential oils. They can also contain allergens and other potentially harmful chemicals. Natural essential oils, in contrast, have therapeutic properties, promoting relaxation, uplifting moods, and enhancing well-being.
When choosing candles, opt for those made from natural essential oils rather than synthetic fragrances. Soy, beeswax, or coconut wax candles are made from natural, renewable resources and generally produce fewer harmful emissions. Look for candles that are fragrance-free or use natural essential oils for scent. Diffusers are another option for dispersing fragrance into the air without producing harmful byproducts like soot or VOCs.
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Metal-cored wicks
In 2003, the U.S. Consumer Product Safety Commission (CPSC) banned the sale and manufacture of candles with lead wicks, as well as the import of lead-containing candles. This decision was based on laboratory tests indicating that burning candles with metal-cored wicks containing lead concentrations of 0.06 percent or higher resulted in detectable emissions of lead into the air. However, it's important to note that the presence of lead in a wick cannot be determined by visual inspection and requires laboratory analysis.
Today, most metal-cored wicks produced in the U.S. are made of zinc, which has substantially lower lead content than the established safety standards. Zinc-cored wicks provide similar rigidity to their lead-cored predecessors while reducing the potential health risks associated with lead exposure. Nonetheless, concerns have been raised about trace amounts of lead in zinc wire, which can be identified by rubbing the wire on paper and observing any grey marks.
To avoid the potential risks associated with metal-cored wicks, consumers can opt for candles with natural fibre wicks, such as cotton or wood wicks, which are widely available and considered safer alternatives. Additionally, choosing candles made from natural waxes like soy, beeswax, or coconut wax can further reduce the presence of harmful emissions and improve indoor air quality.
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Frequently asked questions
Yes, candles can release Volatile Organic Compounds (VOCs), especially when they are made from paraffin wax. VOCs can also originate from the fragrance and wicks of candles.
Prolonged exposure to VOCs has been linked to serious health problems including cancer. Common health issues reported by people exposed to VOCs include headaches, shortness of breath, and coughing.
Candles made from natural waxes like soy, beeswax, or coconut wax are healthier alternatives as they produce fewer harmful emissions. Opt for candles scented with natural essential oils rather than synthetic fragrances.
To minimize the risks, ensure the room is well-ventilated when burning candles. Always trim the wick before lighting to reduce soot production and avoid burning candles in drafty areas.
