Nicotine Salts, by standard, have the same amount of nicotine found in an actual tobacco leaf. Nicotine salts use benzoic acid, which then lowers the pH. This reduces the alkalinity, allowing vaping at lower temperatures. Salts tend to be 50/50 when it comes to the ratio of vegetable glycerin (Vg) and propylene glycol (Pg). This makes the consistency of the e juice less syrupy which creates a cleaner hit for mouth to lung vaping. Salts also come in a few different nicotine levels which tend to be 50 mg and anywhere from 25-35 mg.