Is Darker E-Juice Bad For You? - Wild Leaf

Why Does Vape Juice Get Dark, And is it Harmful?

We often see the preference for lighter colored e-juices due to the thought that they’re less harmful than darker juices. Vape juice can be a darker color for multiple reasons.

They were made that way!

Some flavorings, like dessert- inspired, tobacco, or even a lot of the grape flavors oddly enough, can be much darker in general. These flavorings are made in similar ways as lighter colored flavors, meaning the color doesn't have much to do with it.

As long as the main ingredients are mostly PG (Propylene Glycol) and VG (Vegetable Glycerin), and you make sure the juice is from a reputable brand, there's nothing to worry about!


But not all dark vape juice was made that way, sometimes it happens due to oxidation if the juice sits for a while. This doesn’t mean it’s expired, oxidation happens because of a chemical reaction between oxygen and the nicotine in the e-juice (which is why an e-juice sitting for the same amount of time with less nicotine will not be as dark). Oxidation is also a harmless instance, though the nicotine may be slightly weaker.

E-Juice technically will never become more dangerous to use as time goes on, and a flavor “expiring” at all takes an incredibly long time! The average window of time for optimal flavor is 3 years according to most manufacturers. After that time, the only thing to watch out for is a bad taste.


So darker e-juices, whether they were always darker or they darkened over time, are not more harmful than lighter or clear juices. The thought is valid though, we all want anything we're smoking/ vaping to be as safe as possible. At Wild Leaf Tobacco, we only carry premium e-juice from brands we know and trust because of this. We do hope this clears up any confusion or anxiety!