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Why Cannabis Oil Darkens Over Time

Why Cannabis Oil Darkens Over Time

Ever held onto an oil cartridge for an extended period of time? If so, you have likely noticed a change in the oil’s color.

First, don’t panic! This phenomenon is natural. Like all natural products, cannabis oil contains bioactive ingredients that will change overtime.

Because our oils do not contain any form of additives or preservatives, they are vulnerable to the basic laws of chemistry. A change in color does not mean a compromise in oil quality, but a natural chemical reaction to time, heat, and sun exposure. Each time you use your vape, you are exposing the oil to heat and oxygen: two elements that make oxidation happen, which is the prime contributor to the natural darkening process. In sum, a darkening of your oil does not indicate it is no longer effective.

That being said, oils do have a shelf life. After some months, there is a slight decline in the quality of oil. After about a year, the oil’s chemical structure begins to degrade, changing the texture and viscosity of the oil. Eventually, vibrant clear oils become murky and dark in color, no matter the quality of the oil upon purchase. Your high will also be less predictable in quality and effects the longer you wait to use your product. While Kurvana oil has no official expiration date, we recommend using your cartridge within 18 months of purchase.

For the best vape experience possible, remember to:

AVOID leaving your cartridge in direct sunlight. This can help keep your cartridge from accelerated darkening or leakage.

AVOID leaving your cartridge in heat, such as a hot cars or getting stoned in the sauna. This will help keep your cartridge from accelerated darkening or leakage.

TRY to store your cartridge in a cool, dry, and dark or low-light place to ensure the longest shelf life.

TRY to use a Kurvana branded battery for the best vape experience. If you use a different battery, set it to a 3.2 voltage for Originals and CBD, and 3.5-3.7 volts for ASCND.  

TRY to use your Kurvana cartridge within 18 months of purchase.


Oxidize – to combine with oxygen.

Bioactive – Any substance that affects a living organism exposed to it.