Is Incense Bad for You? Incense vs Candles, Honestly Compared
Quick answer: incense smoke isn't harmless, and natural incense is no exception. Burning incense releases smoke, fine particles and gases, and long-term, heavy indoor use has been linked to respiratory risks. Candles pollute too, but measured by mass, incense usually gives off more fine particles. For most healthy adults, occasional use is a reasonable choice: burn one stick at a time, keep the room ventilated and air it out afterwards. If you're sensitive to smoke, take more care.
How we answer this question
Customers ask us whether burning incense is bad for them, and we think it deserves a straight answer. Nothing that releases scent by burning can honestly be called completely harmless, and natural incense is no exception. When a stick burns, it gives off smoke, fine particles and some gases, and plant-based ingredients don't make the smoke free of irritants.
So we won't promise that incense is "absolutely safe", "non-toxic" or "harmless because it's natural". We'd rather you know what you're buying and decide, based on how your own body responds, whether it suits you.
In this guide:
What's Actually in Incense Smoke?
- A University of North Carolina study of incense burned in homes found that it releases fine particles, carbon monoxide, formaldehyde and nitrogen oxides. In lab tests, the pollutants triggered an inflammatory response in human lung cells.
- Incense is made to smoulder rather than burn with a clean flame. That's what produces the slow ribbon of scented smoke, and it's also why it creates more particles than a flame does.
What Does Long-Term Research Say?
The largest study so far followed 61,320 adults in Singapore. Long-term incense users had more than twice the risk of certain upper respiratory tract cancers, and about 1.7 times the risk of squamous cell lung cancer, in both smokers and non-smokers.
The context matters:
- The participants were long-term, often daily users in homes where incense was burned for religious practice, not occasional users.
- It is one observational study, and the authors said it needs to be confirmed.
- It found no overall rise in all types of lung cancer.
The fair reading is that heavy, long-term exposure to incense smoke indoors is a real concern, and that how much and how often you burn it matters.
Incense vs Candles: Which Is Healthier?
| Incense | Candles | |
|---|---|---|
| How it burns | Smoulders, no flame | Open flame |
| Fine particles (PM2.5) by mass | Higher: in one chamber study, roughly 10 to 100 times more than candles | Lower |
| Ultrafine particle count | Lower in one room study | Higher in one room study |
| Soot | Some ash and smoke | Soot, especially from paraffin and long wicks |
| Lead | Not applicable | Lead-core wicks were banned in the US in 2003 |
| Fragrance additives | Depends on ingredients | Depends on fragrance oils; scented candles aren't the same as plain ones |
| Fire risk | Ember and falling ash | Open flame |
So which is healthier? Neither is clean. By fine-particle mass, a candle is usually the lighter option. But a single stick lit for 20 minutes in a ventilated room is a very different exposure from candles burning all evening in a closed one. How you use it matters as much as which one you choose.
How we use them
We don't think one is simply better than the other; they suit different moments. We reach for incense for meditation, reading, yoga or a quiet break after work. It takes up almost no space, the woody scent spreads slowly, and one of our coreless sticks lasts about 35 to 40 minutes, which fits a set stretch of rest.
Candles suit evenings, the dinner table or any time you want soft light: with a candle, the flame is part of the experience, while incense is about scent. Just don't assume every candle is a smoke-free swap. Plain and scented candles are different, too.
Comparing more options? See our guide to incense vs candles vs essential oils.
Does Natural Incense Make a Difference?
Probably, but it isn't a free pass. Synthetic fragrance oils, dyes and accelerants add their own compounds to the smoke, so ingredients matter. But any burning plant material creates particles.
What we can and can't tell you about ours
We lean towards plant-based ingredients, and want the materials to smell like themselves rather than chase a strong fragrance. The one process detail we can confirm is that our coreless sticks are held together mainly with plant bark powder, so they keep their shape without a bamboo core. We also pay attention to how steadily a stick burns and how strong the scent is.
What we haven't done is test our sticks' emissions against other incense. Plant-based doesn't automatically mean less irritating, and claiming our sticks are lower-smoke or cleaner would take real, comparable test data. Until we have that, we won't make the claim.
Who Should Be More Careful?
- People with asthma, COPD or other lung or heart conditions
- Anyone sensitive to smoke
- Babies and young children
- Pregnant women
- Pets, especially birds and cats. See our guide to incense and pets
- Anyone in a small room that's hard to ventilate
Room size, airflow, the number of sticks and your own sensitivity all change how incense affects you. In a small, poorly ventilated room, smoke builds up and can irritate the eyes, nose or throat, and some people get headaches. Good airflow dilutes and clears it faster, but that doesn't mean no exposure. If you feel any clear discomfort, put the stick out, get some fresh air, and seek medical help if symptoms persist or are severe.
How to Burn Incense With Less Exposure
- One stick at a time. Lighting more doesn't make the scent better, it just means more smoke.
- Make it a choice, not a chore. We light a stick when it adds something, such as before work, while reading or during a quiet break, not as a daily task.
- Keep sessions short. Put it out early in sand when the room smells right.
- Open a window, and air out afterwards. Here is how to ventilate a room when burning incense.
- Don't sit right next to it. Keep it 1 to 2 metres away, and never burn it while you sleep.
- Choose sticks with simple, natural ingredients and as few synthetic additives as possible.
For the full method, see our step-by-step guide to burning incense safely.
Our Take
We don't think loving incense and taking its smoke seriously are at odds. Natural ingredients are one of the standards we use to choose what we make, but they're no excuse to ignore health questions.
A good incense brand shouldn't earn trust by promising that incense is "completely harmless". It should tell you clearly what you're buying, how to use it, and when not to use it. We want scent to add a little comfort and quiet to your day, but not at the cost of the air in your home.
FAQ
Is incense bad for your lungs?
Smoke from any burning material irritates the airways, and long-term heavy indoor use has been linked to respiratory risks. Occasional, ventilated use is a much smaller exposure.
Is incense healthier than candles?
Not by fine-particle mass: incense usually produces more. Both pollute indoor air, and how you use them matters as much as which one you pick.
Is it safe to burn incense every day?
Daily use adds up. If you do, keep it to one stick, keep sessions short and keep the room ventilated.
Is natural incense safe?
Natural ingredients avoid synthetic additives, but any smoke contains particles. Natural doesn't mean harmless.
Is Toukson incense non-toxic or low-smoke?
We don't make those claims. We haven't tested our emissions against other incense, so we can only tell you what we know: plant-based ingredients and a plant bark powder binder.
Are candles bad for indoor air?
They give off soot and ultrafine particles, especially paraffin candles and long wicks. Trim wicks and ventilate.
Can I burn incense in my bedroom?
Yes, briefly, with a window open, and never while you fall asleep.
Is incense bad for dogs and cats?
Pets are more sensitive to smoke than we are. See our guide to incense and pets.