“It is also used in the production of watercolor paints, printing inks, and cosmetics.”

http://www.wisegeek.com/what-are-the-different-uses-of-liquid-glycerin.htm

“extracts made from Vegetable Glycerine typically have a shelf life of 14-24 months whereas alcohol extracts can have an extended shelf life of 4-6 years.”

“You can make a simple, herbal glycerite by simmering herbs in a mixture of 60% glycerine and 40% purified water for two to three hours. We have generally used about 1/4 cup of cut and sifted, dried herbs per 1 cup of glycerine/water solution. When you strain this solution, bottle it and store it in a cool, dark place. It retains its effectiveness for two to three years.”

 http://www.morethanalive.com/Vegetable-Glycerin

“It seems that you can use glycerin as a preservative when you use 50% glycerin or more in a product.”

” foot lotion recipe with 25% glycerin, and it feels great on my feet…but it feels awful on other …