USP, Propylene Glycol Used to thin e-liquid and used in e-liquid recipes.
All base e-liquids require products of quality USP of the purest. Propylene Glycol USP (PG) is a e-liquid that will create an intense and visible, completely safe steam and is declared as safe for consumption by the FDA.
Choose in the suited field the concentration in nicotine which suits you.
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The concentration of 100mg must be diluted, and must not be directly absorbed.