Consumer advice on safe candle use and indoor air quality

Experts are providing guidance on minimizing health risks associated with burning candles during the darker months. According to Kerstin Effers of the Verbraucherzentrale NRW, improper candle use or low-quality products can release fine dust, soot, formaldehyde, and nitrogen oxides into indoor air. Scented candles are specifically noted for posing allergy risks and potential harm to pets.

To maintain better air quality, experts recommend trimming wicks to approximately one centimeter before lighting and avoiding drafts that cause flickering flames. Using a candle snuffer or dipping the wick into liquid wax can prevent smoke during extinguishing. Thorough ventilation after use is also advised.

Additionally, a trend involving using aluminum foil to create reflectors for tea lights has been evaluated. While creating a small foil shield can slightly increase light directionality (candela), it does not increase the total light output (lumens). Users are cautioned not to surround the candle completely with foil, as excessive heat buildup could lead to a wax fire.