How to Prevent Soot on Candles

  • By: Carole Brooks
  • Date: 16.05.2023
  • Time to read: 4 min.

How to Prevent Soot on Candles?

Whether in tea lights, pillar candles, or stick candles, candlelight is generally pleasant and cozy. But some commercially available candles can be harmful to your health. We explain how you can recognize good candles.

Cloudy gray weather and the ever-earlier onset of darkness increase the need for light and warmth in your own four walls. “Now candles are in high season,” says Ingrid Grimm, spokeswoman for the Candle Quality Association. But not all candles are safe for health.

“Individual components in the soot can be harmful to health,” admits Stefan Thomann of the European Candle Association in no uncertain terms. “They should, of course, be reduced as much as possible.” If many heavily sooty candles burn for long periods in a room, soot could also settle on walls and furnishings and cause damage.

“As with any incomplete combustion, various pollutants are produced in the process,” informs the Bavarian Consumer Center. Paraffin, which is made from petroleum, is particularly problematic here. “The fine particles rise with the hot air, become components of the suspended dust, and can be inhaled,” the consumer protectors say. Candle paints and varnish coatings have also repeatedly given rise to complaints in the past, they said.

However, the consumer can easily recognize harmless candles already in the store. “The RAL quality mark means that the candle burns well, does not soot, and that the consumer does not have to worry the slightest about his or her health,” promises Dr. Volker Schmidt, Managing Director of the Quality Association for Candles, which awards the RAL quality mark.

Compliance with all regulations on limiting values of additives such as paraffin is continually monitored by Dekra for RAL-marked candles, as the quality association states on its website. “Candles with the RAL quality mark are a good choice in any case,” confirms the consumer advice center.

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Always dust candles. How to clean the dust off candles?

The candle soots or burns down uncleanly because there are too many dust and dirt particles. You can clean dirty candles with a lint-free cloth soaked in methylated spirit. The candle holder should also be cleaned regularly.

How long do candles burn?

A candle burns seven to ten grams of its mass every hour. But it can also go faster; for example, if some candles are too close together because a lot of heat develops, they can also deform. Therefore, the experts advise a distance of at least ten centimeters between individual candles.

Read more: Why Candles Not Burn?

How can smoke clouds be avoided?

If the wick is too long, it forms a lot of soot. If it is too short, the flame does not burn well. For this reason, the Candle Quality Association advises a length of about ten millimeters.

There is also a tip for extinguishing the flame: Smothered instead of blown out. This can be achieved with a special extinguisher. This is a cone that is placed over the flame. Or the wick is briefly dipped into the liquid wax immediately after blowing out.

Crackling is not dangerous.

The candle usually crackles when it is damp, such as outdoors or in a wet bathroom. If rainwater has dripped into the burning bowl, wipe it dry. If the wick is moist, then the crackling cannot be prevented. But it is not dangerous.

Candle burns on one side: What helps?

A candle often burns on one side, which is usually due to the wick, explains the consumer advice center in Hamburg. It should be bent carefully until it is straight and centered again. To prevent the candle from gradually becoming hollow and then burning more puny, it should always be left on until the entire top layer of wax has become liquid.

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This is called the sizzling plate. Either way: It is better not to leave the remains of matches in the hot plate. If they catch fire, they can sink through the edge of the candle like a knife through soft butter, and the wax runs out.

Making the candle fit the holder

If the candle is too thick for the holder, this can be easily remedied: Dip the bottom end briefly in boiling water. The wax can then be easily shaped and thus also inserted into the stand.

What are candles made of?

Candles can be made of paraffin, stearin, soy, or beeswax. Beeswax with a long burning time is a natural product and therefore naturally good from an environmental point of view. It may be called so only if it is without any admixtures.

“However, this is also a precious raw material and the most expensive material because it is only available in limited quantities,” explains Dirk Petersen, an environmental expert at the consumer center in Hamburg. Such candles account for only one to two percent of the market.

Stearin is also a renewable raw material of plant or animal origin. It consists, for example, of palm and coconut fats and beef tallow. However, virgin forests are cleared for palm fats.

The advantages of stearin: It burns for a long time, soots little, and does not drip. Important: Stearin candles must be made of at least 90 percent stearin to be called stearin candles. However, paraffin is often added to prevent the wax from crumbling.

Paraffin is less expensive, derived primarily from petroleum, and has a low melting point, burning faster. High-quality paraffin candles are, in turn therefore mixed with stearin.

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