E-juices (also called e-liquids) are ready-to-use compounds, which contains carrier substances (propylene glycol and vegetable glycerine) together with aroma and nicotine. In compare with DIY e-juice mixtures, it is possible to fill an atomizer or POD cartridge with them and directly use them to vape. Vapor from electronic cigarettes is a vaporized e-juice, without any other harmful substances.
Main attribute except nicotine amount is a ratio between carrier substances.
Propylene glycol (PG) is a sparse substance, which can seamlessly carry flavour.
Vegetable glycerine (VG), is a dense substance with poor flavour carry ability, but positively affects overall density of e-juice and thickness of vape clouds.
Because of this, most e-juices are produced in 50:50 PG-VG ratio.
You can find two types of e-juices, different in type of nicotine.
Standard e-juices are produced with freebase nicotine, which provides "hit" very similiar to tobacco cigarettes.
Nicsalt e-juices comes with nicotine salt, substance which is more similiar to nicotine in tobacco cigarettes and also has an ability to get into bloodstream more quickly, which results in earlier satiation. As nicsalt comes without "hit", it is best choice especially for POD devices.
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