Are Scented Candles Bad for You? What to Look for in Clean-Burning, Non-Toxic Candles
Whether scented candles are harmful to health is a question that gets asked often. The truth is that a well-made candle in a ventilated room isn’t the health hazard parts of the Internet make it out to be. The real difference between a candle worth burning and one that’s not sits mostly on the back of the label.
Why the Answer Depends on What's in the Jar
For most healthy adults, a good scented candle in a ventilated space poses very little risk. Some controlled studies find normal use carries no known health risk, while others measure particles and compounds rising above indoor-air guidelines under specific circumstances, such as when a candle is burned heavily is left to sit in a sealed room. The conditions matter as much as the candle.
It matters more for some people and situations than others. If you have asthma or sensitive airways, burn candles in a small unventilated room or reach for the cheapest option on the shelf, the quality of the candle is worth closer attention. Many mass-market scented candles use paraffin wax, a petroleum byproduct, synthetic fragrance that can carry phthalates, and wicks that once hid a metal core. The inputs decide the output.
Living in Singapore adds another consideration. HDB flats, air-conditioned rooms and closed windows concentrate whatever a flame gives off, which is why some people weigh how a candle compares with a reed diffuser before making a purchase decision.
Four Things Worth Checking on an Aromatherapy Candle's Label
Most of it reads in under thirty seconds. Four things are worth a glance.
- Wax Type: Look for soy, coconut, rapeseed or beeswax. Plant-based waxes burn cleaner, with less soot than paraffin.
- Wick: Watch out for cotton or wood with no metal core. A brand that cares will say so plainly.
- Fragrance: Phthalate-free fragrance oils or pure essential oils are your best choices here.
- Made By Whom: Hand-poured in small batches gives the maker control over wick centring, pour temperature and the burn.
How You Burn It Matters as Much as What You Buy
A good candle can still soot if you treat it carelessly. Here are some best practices for getting the best out of your aromatherapy candles:
- Trim the wick to about five millimetres, let the wax pool reach the edge on the first burn, and keep it out of draughts.
- Never burn a candle more than about three hours at a stretch, which keeps the jar cool and the wick clean.
How Slow Scent Company Approaches Scented Candles
At Slow Scent Company, our answer is simple. All our handmade candles feature plant-based wax, phthalate-free fragrance and cotton wicks. Our soy candles are hand-poured here in Singapore, and you can learn how to make your own at a scented candle workshop in our Chinatown studio.
Small batches are as much about control as deliberate, controlled care. Pouring a little at a time lets us watch each candle set, catch an uneven wick and keep the burn consistent. Once you trust what goes into a candle, the next question is what you want from it, whether that’s a lively daytime scent or something quieter to help you sleep.
A Candle Worth Burning Tells You What's In It
The honest answer to whether scented candles are bad for you is that most are fine, and the good ones tell you why. No panic required, just a glance at the back of the label. Plant-based wax, a cotton wick and a phthalate-free fragrance are all things to look out for. At Slow Scent Company, all our handmade candles are made to these standards.
Browse our range of hand-poured aromatherapy candles, hand-poured in Singapore with plant-based wax, pure essential oils and no synthetic fillers.