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Why does E-Liquid get dark? How can I avoid this?

Author: Caitlin Todd
by Caitlin Todd
Posted: May 21, 2021

Have you ever noticed that the vape juice or electronic liquid in its bottle or the tank changes its colour and turns dark brown or black while sitting in your tank for too long? Sometimes, the juice gets darker in the tank or sometimes it gets dark even in its bottle. Here are the reasons that why it happens and some tips on how to avoid your E-juice from turning dark brown or black.

Why E-liquids turn dark in the tank?

The reason behind the darkening of e juice in the tank is the ingredients such as artificial colours and sweeteners that are used in the vape juices. You can find the juices without sweeteners by searching companies selling unsweetened E-liquid near me. Mostly, the flavours available in the market contain artificial flavours and sweeteners to make the liquid sweet, especially all the candy flavoured line of any brand is more likely to be loaded with sweeteners and artificial flavours. These sweeteners present in your vape juice start to burn and caramelized, as your coil heats up while working. This caramelized sweetener usually sticks to the coil and cotton.

This process of caramelizing sweeteners causes the liquid in the tank to change its colour. With the burning of caramel over time, the juice in the tank turns darker.

Why the vape juice turns brown in the bottle?

The reason behind the browning of the vape juice in its bottle is the chemical reaction that is known as an oxidation reaction. This is normal and you can expect the darkening of your e juice after some time of opening the bottle. Nicotine is highly reactive and oxidation reaction occurs due to exposure of nicotine to oxygen. Even its exposure to light can cause it to turn its colour. However, the more amount of nicotine present in the vape juice, the more will be chance of reaction. This means even darker e-liquid.

How can I avoid the darkening of E-juice?

The reason why E-juice darkens is the chemical reaction and the reason for its darkening within the tank is due to caramelizing of sweeteners present in the vape juice. However, you cannot fully prevent your vape juice from turning brown or black, but there are some tips to slow down the process of colour changing. These points are:

  • Store the unsealed bottle of vape juice in the dark and cool place.
  • Do not let your vape juice ageing.
  • Do not mix any two brands of E-liquids
  • Do not mix new or old juice.
  • Try to buy the juice without added sweeteners.
  • Before refilling your vape tank, clean the tank thoroughly.

Exposure to sunlight or heat can cause the liquid to turn dark inside the bottle while the juice in the tank turns dark because of the added sweeteners and artificial flavours in the vape juice. This process cannot be stopped but you can slow down this by using above mentioned tips. However, dark colour does not affect the flavour or quality of the vape juice.

About the Author

I'm a digital marketing expert specializing in brand research, detailed audience construction, intense demographic and psychographic targeting and prov

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Author: Caitlin Todd

Caitlin Todd

Member since: Nov 19, 2020
Published articles: 4

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