Are Colored E-Liquid Vapors Harmful?

 　　A video on Weibo has gone viral recently. It mainly shows that when coloring is added to an atomizer, the vapor exhaled is still white, and when coloring is put into a humidifier, the “mist” that comes out is also white. Since e-liquids come in so many different colors, does that mean the vapor you exhale is harmful? As promoters of vape culture and knowledge, we naturally need to answer this question.

  　　Let’s start with the atomization principle. We know that e-cigarette vapor is produced when the heating coil heats the e-liquid, turning it from a liquid into a gas. This process works on the same principle as boiling water. To give a very simple example, most of us have had ginger cola before. When cola is boiled, we can clearly see that the steam is white rather than black. That is also why vapor from e-cigarettes is white rather than colored.   　　Now let’s talk about humidifiers. The humidifiers we commonly use today are ultrasonic humidifiers. These devices use high-frequency ultrasonic vibrations of 2 million times per second to break water into ultrafine particles of 1 to 5 microns and negative oxygen ions. But this “mist” is not actually true steam; it is simply water being broken into tiny droplets. To put it simply, it’s like ladling soup out of a pot—the soup in the spoon is still the same color as the soup in the pot.   　　There was another detail in the video as well: when the creator inhaled the humidifier’s mist and exhaled it, the exhaled cloud was still white. This brings us to the lungs’ natural self-cleaning function. The lungs cleanse themselves in two ways: first, by exhalation, which directly removes harmful substances from the body; second, through phlegm production, where secretions in the lungs wrap up harmful materials and expel them. Although most dust particles are removed by exhalation, the key factor in protecting health is actually the lungs’ mucus-clearing and phlegm-expelling function. We all know that the lungs of people who use traditional tobacco become darkened. Whether this can be taken as proof that the lungs can absorb coloring agents has not been clearly defined, but that possibility also cannot be ruled out.   　　So, for vapers who didn’t understand why colored e-liquid turns into white vapor after atomization—does it make sense now? Don’t let this video make you afraid of colored e-liquids. After all, as products intended for inhalation, their quality is still something you can feel reasonably confident about. If you have any other questions while using vaping devices, feel free to leave a comment anytime, and we’ll answer them for you one by one.