Are scented candles bad for your health?

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SA CANDLE GUIDE · ASK & ANSWER ·  

Are scented candles bad for your health?

Short answer

For most people burning a scented candle in a ventilated room, the evidence shows no clear health risk. Large studies find that candle emissions, paraffin included, fall well below international exposure limits under normal use. The watch-points are undisclosed fragrance that can hide phthalates, and a poor wick that throws soot, both of which you can check before you buy.

What the research shows

The scary headlines mostly trace back to a single 2009 study from South Carolina State University, which was never published in a peer-reviewed journal and has been criticised for its method. Bigger studies reach steadier conclusions. In 2007 the Bayreuth Institute of Environmental Research in Germany tested paraffin, soy, stearin and beeswax across more than 300 chemicals, and the combustion byproducts of every wax type came out close to identical. A 2014 review in Regulatory Toxicology and Pharmacology found scented candle emissions fall well below safe exposure limits in normal use. The Cleveland Clinic's view is that there isn't strong evidence to call candles dangerous, and the National Candle Association reaches the same conclusion.

Two things matter more than the wax. A wick with a metal core, or one left untrimmed, burns dirty and leaves a grey ring of soot on the glass. A cotton or wood wick trimmed to about 5 mm burns clean. And the single word "fragrance" on a label can stand in for dozens of undisclosed ingredients, phthalates among them. Candles made with IFRA-compliant oils (the international fragrance safety standard) or a fully listed fragrance are the trustworthy ones.

What this means for sensitive lungs

People with asthma or sensitive airways can react to smoke and strong fragrance, so a little care goes a long way. Crack a window, keep the wick trimmed to 5 mm, and choose candles with disclosed, IFRA-compliant fragrance and a metal-free cotton wick. Daily burning in a small, sealed room is the habit worth changing first.

How Mylk approaches it

We make candles for the rooms our own family lives in, which set the standard for what goes in. Mylk pours a coconut-soy wax with no paraffin, parabens or phthalates, metal-free cotton wicks, and IFRA-compliant perfume-grade fragrance oils. Every batch is power-burned for about 45 hours before it ships, which confirms an even wax pool and clean glass. You can read all of it straight off the label when you browse our clean-burning scented candles.

For a full breakdown of wax, wicks and the local makers worth knowing, see our non-toxic candle guide.

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