Gloop XYZ offers a range of flavor additives called upgrades, designed specifically for electronic cigarette devices. In just a few drops an e-liquid flavor can be dramatically improved and tailored for a users taste. Gloop has three main models, referred to as X, Y and Z. Gloop X is the Throat Hit upgrade that increase the throat hit a user experiences whiling vaping, it does this without increasing the nicotine content of the base juice. Gloop Y is called Smooth, it reduces high notes found in some e-liquid flavors and also reduces the throat hit and nicotine content of a pre-made juice. Gloop Z comes in two options, one is Bitter and the other is Sweet. These two additives will increase or decrease an eliquids sweetness or bitterness.