Nicotine dilutions in VG (vegetable glycerin) or PG (propylene glycol) base are commonly used in the preparation of e-liquids for vaping. These dilutions involve mixing pure nicotine with either VG or PG to create a nicotine solution with a desired concentration. The VG/PG base serves as a carrier for the nicotine, allowing it to be evenly distributed throughout the e-liquid. Vapers often choose nicotine dilutions based on their preferred nicotine strength and the balance of VG and PG in their e-liquid. Higher VG ratios are favored for producing thicker vapor clouds, while higher PG ratios are preferred for stronger throat hits and flavor intensity.