There are two major components to e-liquid: PG (Propylene Glycol), often used as a solvent, and VG (Vegetable Glycerin) as a humectant. These are both food grade chemicals; they're safe for human consumption and are not toxic. There are actually many different types of PGs and VGs that are widely available and used in their various applications. So, get one for your e cigarette from australia...
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