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The science and vision behind IQOS

IQOS is the combination between science and technology.

IQOS desmontado
Edifício espelhado da PMI na suíça.


We believe science can change the lives of millions of smokers, who would otherwise continue to smoke. To this effect, we recruited scientists to work on developing less harmful products that cigarette smokers can switch to if they don’t want to quit. Hundreds of scientists and engineers at PMI’s global Research and Development centers in Switzerland and Singapore have developed and evaluated IQOS, an innovative electronic device that heats and not burns tobacco. It produces a tobacco vapor that delivers tobacco taste and nicotine.


Técnica de laboratório a segurar o IQOS

Tested by scientists

IQOS 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 is a better alternative than continuing to smoke cigarettes.

Imagem d iqos 3


Why is heating better

Technology. By combining science and technology we developed a better alternative to continued smoking. IQOS is changing the way adult smokers, who would otherwise continue to smoke, can enjoy tobacco.

IQOS heats tobacco instead of burning it for a simple reason: the burning of tobacco emits high amounts of harmful chemicals. IQOS HeatControl™ Technology prevents tobacco from burning, which means it significantly reduces the number and level of harmful chemicals emitted compared to cigarette smoke.

Lamina do IQOS

Ilustração da temperatura de aquecimento do tabaco pelo IQOS


Heating technology

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 6000 chemical substances, around 100 of which have been to linked smoking-related diseases by public health authorities.

Ilustração a comparar a temperatura do cigarro e do IQOS

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 vapor 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.

*”95% less” represents the average reductions in levels of a range of harmful chemicals (excluding nicotine) compared to the smoke of a reference cigarette (3R4F). See Important Information on IQOS.com


Ilustração da temperatura do cigarro Imagem de IQOS numa mesa


Imagem do iqos 3 duo aberto

Tobacco vapor vs Smoke

IQOS tobacco vapor is less harmful than cigarette smoke. To demonstrate this, we conducted a comprehensive assessment program that included 10 clinical studies on aerosol chemistry (as well as data from 18 non-clinical studies), and involved thousands of participants in the US, Japan, UK and Poland. Evidence demonstrates that switching completely to IQOS, while not risk-free, presents less risk of harm compared with continuing to smoke cigarettes.


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.


Ilustração das partículas libertadas pelo fumo do cigarro vs. aerossol do IQOS

Our study shows that, because IQOS does not burn tobacco and it does not generate smoke. 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.

Dois cientistas IQOS num laboratório


Science machine

We’ve created a machine to show the significant differences between smoke produced by burning tobacco in a cigarette compared to the tobacco vapor generated when tobacco is heated in IQOS. Watch the science machine video to see more.


3 algodões diferentes

Science machine

We’ve created a machine to show the significant differences between smoke produced by burning tobacco in a cigarette compared to the tobacco vapor generated when tobacco is heated in IQOS. Watch the science machine video to see more.



Switching to IQOS

Os nossos estudos demonstraram que a satisfOur 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.


All IQOS equipments in a table.

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.

*3-month clinical study conducted in US and Japan with 160 adult smokers each, under near real-world conditions.
IQOS 3 DUO e IQOS 3 multi dourados IQOS 3 DUO em cima de uma bolsa de transporte IQOS
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This website is intended only for users of nicotine or tobacco products who are over 18.

This website contains information about our smoke-free products and we need your age to make sure that you are an adult 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.