Why calling e-liquid juice in a vape?

The term "juice" for e-liquid is a piece of casual slang that caught on naturally within vaping culture. It's not an official term, but it makes intuitive sense for a few reasons:

Visual Resemblance
E-liquid looks a lot like fruit juice or cooking oil – it's a colored, translucent liquid that often comes in dropper bottles or small plastic containers. The word "juice" immediately brings to mind a consumable liquid.

It's the "Fuel" for the Device
Just as a car runs on gas (or "juice" in slang), a vape runs on e-liquid. Calling it "vape juice" frames it as the essential fluid that makes the device work.

Flavor Association
E-liquid is available in hundreds of flavors – fruit, candy, dessert, soda. "Juice" fits perfectly with these sweet, fruity profiles (e.g., "blue raspberry juice," "mango peach juice"). It makes the product sound more palatable and less chemical.

Marketing and Community Slang
Early online forums and vape shops popularized the term because it's short, friendly, and easy to say. "E-liquid" feels more formal and technical; "juice" feels casual and fun.

Differentiation from Other Liquids
In a vaping context, "juice" specifically means the nicotine-containing or nicotine-free e-liquid. It's a handy shorthand that distinguishes it from other fluids (like cleaning alcohol or water).

In short: It's a colorful, informal nickname that stuck because the liquid looks like juice, tastes like juice flavors, and serves as the "fuel" – or juice – that powers the vape. You'll see it used interchangeably with "e-liquid," "vape liquid," or simply "liquid."