A vape pen, also known as an e-cigarette, is a type of electronic device that is used to vaporize a liquid, usually referred to as e-juice or e-liquid, for inhalation. Vape pens are designed to look and feel like traditional cigarettes, but they produce a vapor instead of smoke.

Vape pens come in a variety of shapes and sizes, and they can be used with a variety of e-liquids, including those that contain nicotine, CBD, and other substances. Some people use vape pens as a way to quit smoking or to reduce their nicotine intake, while others use them for their potential health benefits or for recreational purposes.

It's important to note that while vape pens are marketed as a safer alternative to smoking, there is limited scientific research on their long-term effects, and they can still be harmful to your health. Additionally, there have been reports of serious health problems, including lung injury, associated with the use of vape pens.