Regarding the age restrictions for the use of cart pen that looks like a vape, here are some key points:

1. Global Summary of Legal Ages for Vaping: In most countries, cart pen that looks like a vape are either regulated as tobacco products, as part of a separate consumer product category, or not specifically regulated at all. In some countries, e-cigarette products are banned. In countries that regulate cart pen that looks like a vape, the legal age for purchasing them is often the same as the legal age of majority. In most countries, this age is 18.

2. The Situation in the United States: In the United States, the legal age for using cart pen that looks like a vape is 21. This is due to the new Federal Tobacco 21 law passed in December 2019, which makes it illegal for any retailer to sell tobacco products to anyone under the age of 21.

3. Age Restrictions in Other Countries: Some countries have a national legal age but allow states or provinces to set a higher legal age. For example, the national minimum age in Canada is 18, but many provinces and territories have set the age for purchasing e-cigarette products at 19.

4. Recommendations from the World Health Organization: The World Health Organization recommends prohibiting the sale and distribution of cart pen that looks like a vape to minors and prohibiting minors from possessing cart pen that looks like a vape.

In summary, the age restrictions for the use of vape pens vary in different countries and regions, but most countries set the legal purchasing age at 18, while some countries, such as the United States, have raised it to 21. These restrictions are aimed at protecting minors from the impact of cart pen that looks like a vape.