December 2, 2019, 4:45 pm | Read time: 3 minutes
Candles are a handy invention—not just during power outages. They are especially popular during the Advent season, used to bathe homes in atmospheric candlelight. If only it weren’t for the bothersome and health-damaging soot…
Even though candles quickly create a cozy atmosphere, they are not always harmless. Not only can the candle flame on an Advent wreath become a fire hazard in the worst-case scenario, but the soot from candles can also be harmful to health. Therefore, it can help to pay close attention when purchasing.
Harmful Substances in Candle Soot
Candle soot contains some components that can lead to health impairments. They occur with every incomplete combustion. This can be especially significant with many candles in a small apartment.
Among the harmful substances in soot is paraffin, which is made from petroleum. The particles slowly rise with the heat, combine with dust particles, and can enter the respiratory tract. Additionally, the burned lacquer layer on the candle can lead to pollutants in the indoor air. Soot can also cause unsightly dark stains on walls or ceilings.
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How to Identify High-Quality Candles
A distinguishing feature of safe candles is the RAL seal, awarded by the Quality Association for Candles. Candles with this quality mark are not supposed to soot or drip. For these candles, the limits for certain additives like paraffin must not be exceeded. Additionally, Dekra monitors compliance with the regulations.
This is what the RAL quality seal for candles looks like:
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Dust on Candles Leads to More Soot
Not only the ingredients but also dust and dirt on the candle surface can lead to increased soot formation. Since these particles do not burn completely, they rise and float in the air. You can easily prevent this by wiping the candle with a damp cloth. You can also take the opportunity to clean the candle holder.
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How to Extinguish a Candle Without Soot Formation
Blowing out a candle, in particular, creates smoke plumes that contain harmful soot particles. However, if you dip the wick into the liquid candle wax to extinguish it, the flame is smothered. The wick can then be straightened again. This can be done with a match, for example. Alternatively, there are small caps that can be held over the candle to extinguish the flame.