"E-Liquid Discoloration Demystified: Causes, Prevention, and Essential Vaping Tips"
December 08, 2023

"E-Liquid Discoloration Demystified: Causes, Prevention, and Essential Vaping Tips"

The discoloration of e-liquid, turning it brown, is a common occurrence and can be attributed to several factors. Here are some possible reasons:

  1. Nicotine Oxidation:

Nicotine is sensitive to light and air, and when exposed to these elements, it can oxidize and turn brown. To minimize this, store your e-liquid in a cool, dark place and ensure the bottle is tightly sealed when not in use.


  1. Steeping:

Some e-liquids benefit from steeping, a process where they are left to age and allow the flavours to meld. During steeping, the colour of the liquid can change, and it might become darker. This is a normal and expected process for many e-liquids.


  1. Sweeteners:

E-liquids that contain sweeteners can also contribute to the browning effect. The sweeteners can caramelize when exposed to heat, leading to a change in colour. High temperatures, especially in the coils of your vaping device, can accelerate this process.


  1. Coil Gunk:

The residue left on the coils after vaping can also affect the colour of the e-liquid. This is often referred to as "coil gunk." It's a build-up of sweeteners and other ingredients on the coils, which can mix with the e-liquid and alter its colour.


  1. Darker Flavourings:

Some flavourings used in e-liquids naturally have a dark colour. If your e-liquid contains these types of flavourings, it may darken over time.


  1. Exposure to Light and Air:

Exposure to light and air can accelerate the oxidation process and lead to the darkening of e-liquid. Keep your e-liquid bottles in a cool, dark place and ensure they are sealed tightly.


If the discoloration is accompanied by an unpleasant taste or a burnt flavour, it could indicate a problem with your vaping setup, such as a worn-out coil or an issue with your device. In such cases, you may want to replace the coil or investigate other potential issues with your vaping equipment.