Buy Pre-Mixed Base. Get your ideal mix of Vegetable Glycerine and Propylene Glycol. Both are high-quality USP grade.
Vegetable glycerine has several uses. The most popular are cosmetics, pharmaceutical drugs and food products. Vegetable glycerine may act as a moisturizer, reduce skin irritation, protect against infection and boost wound healing. It may also help relieve constipation and promote hydration and physical performance. That said, more studies are needed.
Vegetable glycerine is generally considered safe. However, there is a possibility of allergic reaction, headaches, nausea, thirst and stomach upset in some people.