Stellar blue IQOS 3 DUO holder and charger in businessman's hand with HEETS stick inserted

The science and research behind IQOS.

The innovation behind a better choice than continuing to smoke

Brilliant gold IQOS 3 DUO holder with HEETS stick and charger in hand

Less harmful than continued smoking.

Switching completely to IQOS is less harmful than continuing to smoke.

IQOS is tested to the highest standards and has gone through robust scientific assessments, including, to date, 18 non-clinical and 10 clinical studies involving thousands of participants.

The totality of evidence available shows that, while IQOS use is not risk-free, switching completely to IQOS presents less risk to your health than continuing to smoke cigarettes.

Man holding brilliant gold IQOS 3 DUO holder and charger
IQOS DUO holder heats up to 350°C

Why Heating is Better

When a cigarette is lit, the tobacco burns at temperatures of around 600°C. This burning process generates smoke and ash; when a smoker takes a puff, the temperature rises above 800°C at the burning tip.

Cigarette smoke is a complex mixture of over 6,000 chemical substances, around 100 of which have been linked to smoking-related diseases by public health authorities.

IQOS HeatControl™ Technology heats tobacco to a lower temperature (less than 350°C), ensuring that combustion does not occur. Because there is no combustion, IQOS does not produce smoke. It generates a tobacco vapour that brings you a high-quality tobacco taste experience with 95% less* harmful chemicals compared to cigarettes.

Important information: It does not necessarily equal a 95% reduction in risk. IQOS is not risk-free.

Cigarette burns at 800°C

Cigarettes produce tar, IQOS doesn’t

“Tar” is the residue from smoke after a cigarette has burned. IQOS does not produce tar because it heats tobacco instead of burning it. It generates an aerosol residue that is fundamentally different from “Tar” and consists of significantly lower levels of harmful chemicals.* Switching completely to IQOS is less harmful than continuing to smoke.**

IMPORTANT INFORMATION: Although IQOS does not produce tar, IQOS is not risk free, and delivers nicotine which is addictive.

Cigarette filter with brown combustion stains compared to IQOS HEETS stick in IQOS 3 DUO holder with no equivalent stain

IQOS emits less harmful chemicals than cigarettes

Cigarettes burn tobacco, which produces high amounts of carbon monoxide. IQOS doesn’t burn tobacco, producing on average 98% less carbon monoxide (CO) and significantly lower levels of other harmful chemicals compared to cigarettes.*

IMPORTANT INFORMATION: This does not mean a 98% reduction in risk. IQOS is not risk-free, and delivers nicotine which is addictive.

Lit cigarette end compared to IQOS HEETS stick in IQOS 3 DUO holder.
Illustration contrasting effects of cigarette smoke versus IQOS on indoor air quality.

Indoor air Quality.

Indoor Air Quality (“IAQ”) refers to the air quality inside buildings, generally based on the principle of ensuring the health and comfort of the occupants. Temperature, humidity and contaminants are some of the factors that can affect the indoor air quality. But, human presence and activities such as cooking, cleaning or smoking have been proven to have considerable impact.

To enhance our knowledge and understanding the impact of IQOS on indoor air quality we conducted studies simulating “real-world” conditions in an environmentally controlled room. Our testing methods are validated, and ISO accredited.

Our study shows that, because IQOS does not burn tobacco and it does not generate smoke and it drastically reduces levels of harmful chemicals like carbon monoxide, it does not negatively impact indoor air quality. This means that the few compounds we nevertheless detected were found at very low concentrations and far below the maximum exposure levels defined in existing air quality guidelines.

Brilliant gold IQOS 3 DUO holder with HEETS stick and charger next to a plate of strawberries

Science machine

Did you know we’ve created a machine to show the significant differences between smoke produced by burning tobacco in a cigarette compared with the tobacco vapour generated when tobacco is heated in IQOS? Watch the science machine video to see more.

Representation of three filters, one pristine and the two others contaminated
Stellar blue and white IQOS 3 DUO holders

Switching to IQOS.

Our studies show that the satisfaction of those who switched completely to IQOS is comparable to that of those who continued to smoke cigarettes.* Discover more about our scientific assessment journey.

Discover the studies

IQOS is not risk-free and delivers nicotine, which is addictive. The best decision any smoker can make is to quit tobacco and nicotine use altogether.

Woman's hand holding a brilliant gold IQOS 3 DUO holder and charger in a car
DANGER: TOBACCO IS ADDICTIVE

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We Care

This website contains information about our smoke-free products and we need your age to make sure that you are an adult in South Africa who would otherwise continue to smoke or use nicotine products. Our nicotine and tobacco products are not an alternative to quitting and are not designed as cessation aids. They are not risk free. They contain nicotine, which is addictive. Only for use by adults. Please visit the Important Information page of this website for further risk information