eJuice, the liquids that is used in our vapor devices, is made up of two main components.
Propylene Glycol - a moisture holder that helps retain flavoring
Vegetable Glycerin - a vegetable sugar that helps give eJuice shape
Propylene Glycol is used in the flavor retention process in making eJuice. In the early days of eJuice, many companies were producing eJuice with at least 50% propylene glycol, resulting in slightly harsher hits and "watery" liquids. Many pharmaceutical companies began mass producing eliquids due to their access to Propylene Glycol, which is often used in many consumer products including foods and household items. There is a certain percentage of people (~10%) that have a Propylene Glycol allergy, which has led to the advancing of higher ratio Vegetable Glycerin eJuices
Vegetable Glycerin is a vegetable sugar often used in cooking. This is an ingredient that can be found in niche grocery stores such as Trader Joes or Whole Foods. As vaping grows in popularity, and subohm tanks and cloud chasing becomes more of a popular market, high to 100% Vegetable Glycerin eJuice is making its way into the top liquids today. Many flavors are being produced with 70/30 or 80/20 (max VG) ratios. Due to the viscosity of vegetable glycerin, high VG eJuice helps users produce larger and denser vape clouds.
Outside of these two ingredients is the factor of flavoring, which is often the same extracts used in today's baked goods world. It's in this endless combination of flavoring types that individual and independent testing is warranted. Many companies have begun experimenting with different sweeteners and many cream flavorings have been known to test high in Diacetyl and Acetyl Propionyl, both being carcinogenic. Crystal Vapor pushes all the companies we work with to give full disclosure using independent lab testing and each company's ability to provide ISO (Lab Isolation) certification.
The final factor in eJuice is Nicotine, which is what gives eJuice and vaping the properties of smoking cessation. Nicotine is used to give users back control of their nicotine addiction. As Sub-Ohm Devices become more popular, the trend of lower to zero nicotine levels is growing stronger, with a success rate of smoking cessation higher than the patch. Nicotine is not a necessary ingredient in eJuice, and higher nicotine levels actually affect flavor negatively.