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Peppermint oil e-cigarettes, often referred to as "ice cool" or "cool flavor" e-cigarettes, are a very popular product on the market. They are closely related to health risks and global regulatory trends. The core message is: Multiple new studies in 2026 revealed specific health risks associated with them, and the regulatory policies in major global markets also present a complex and even contradictory situation.

⚕️ Health Risks: Beyond the "Ice Cool" Feeling
In the past, people generally believed that the risks of e-cigarettes mainly came from nicotine, but multiple studies in 2026 pointed out that additives such as peppermint oil themselves could also bring specific health risks.

Cardiovascular System Impact: A study published in the Journal of the American Heart Association found that synthetic coolants (such as peppermint oil, WS-3, WS-23) in e-cigarettes caused arrhythmia in mice. In human heart cells cultured in the laboratory, these coolants also interfered with the heart rhythm under simulated stress conditions. Another study also showed that e-cigarette aerosols containing peppermint oil would increase the heart rate and blood pressure in mice.

Respiratory System and Immune System Impact: A study using 3D airway organoid models found that peppermint-flavored e-cigarettes would trigger higher oxidative stress and DNA damage, and induce widespread immunosuppressive responses. Its long-term consequences may include disrupting immune balance and increasing susceptibility to lung tissue damage.

The Deceptive "Ice Cool" Feeling: Peppermint oil and synthetic coolants (such as WS-3, WS-23) do not cool per se, but activate the human TRPM8 cold receptor, causing the brain to generate the illusion of "cold". This deceptive "ice cool" feeling suppresses the cough reflex, masks the irritancy of nicotine, and makes the inhalation process smoother, potentially enticing users (especially teenagers) to inhale more frequently and deeply.

 Global Regulatory "Crossroads": Prohibition and Permitting Coexist
Although the evidence of health risks is increasing, the regulatory directions for peppermint oil e-cigarettes in major global markets in 2026 are different.

United States: Federal Exemption and Local Bans Coexist
Federal Level: The Trump administration's plan to restrict e-cigarette use among teenagers included an exemption for peppermint and tobacco flavors, continuing to allow their sale. Meanwhile, the FDA historically authorized Glas Company's two peppermint flavor (classic peppermint, refreshing peppermint) e-cigarettes for sale in May 2026.

Local Level: At the same time, multiple states and local governments are pushing for stricter bans. For example, Rhode Island and Vermont's bills have explicitly included peppermint flavor in the prohibited sales of flavored e-cigarettes. The Oregon Supreme Court also cleared the way for the tobacco ban (including peppermint) in the two largest counties of the state.

Europe: The Trend of "Blockade" Led by Germany
Unlike the complex situation in the United States, the regulatory trend in Europe is more strict. The German government plans to implement new regulations in 2026 to completely ban the use of peppermint oil and other coolants in e-cigarettes. This ban is based on the assessment of the German Federal Risk Assessment Institute (BfR), which considers these substances to have health risks.

China: Already Prohibited, Clear Position
China's regulatory stance is the most clear. Since the implementation of the "Electronic Cigarette Management Measures" in 2022, it has clearly prohibited the sale of flavored e-cigarettes except for tobacco flavors, and peppermint flavors are naturally included in the prohibited list. The 2026 policy analysis report also predicts that the non-tobacco flavors (especially peppermint and coolants) will be unlikely to be lifted.

Summary
In 2026, peppermint oil e-cigarettes are at a contradictory point:

Scientifically, the evidence of specific health risks (especially to the heart and immune system) is accumulating rapidly.

In terms of regulation, there is a significant divergence among major global markets: the federal level in the United States has chosen to allow it, while Germany, China, and some states in the United States have chosen to prohibit or maintain the ban.