MIGO's E-Liquid consists of 4 main ingredients: 50% PG (propylene glycol), 50% VG (vegetable glycerin), flavorings and nicotine.  Propylene Glycol (PG) This is a colorless, almost odorless, clear, viscous (slightly viscous) liquid with a slightly sweet taste. Propylene glycol is a liquid found in many foods and as a type of humectant and sweetener in, for example, cosmetics, toothpaste and medicines. Propylene glycol is classified as non-toxic (non-carcinogenic) by the World Health Organization. The E-number of propylene glycol is E1520. Vegetable glycerin (VG) Vegetable glycerin is also a colorless, slightly viscous liquid and usually consists of a mixture of 80% glycerin and 20% water. Glycerin is a liquid with a high viscosity and a sweet taste. Glycerin already occurs naturally in the human body and is used in the food industry as a sweetener, including in candy, pastries, and margarine. Glycerin is also found in pharmaceutical products such as cough syrup and suppositories, or in personal care products such as toothpaste and mouthwash. Glycerin is an approved, non-toxic substance and is often referred to as E422. Flavorings The flavor of e-liquid is achieved by adding flavors to the base ingredients propylene glycol (PG) and vegetable glycerin (VG). These flavors have also been used in the food industry for many years. Nicotine MIGO uses nicotine salts (also called "Nic Salt"). Nicotine salt is the natural form of nicotine, as it is found in tobacco leaves. It consists not only of nicotine, but is also combined with another organic element (benzoic acid) to form a stable molecule. Unlike freebase nicotine, it is not bound to other elements.