Glycerine is a colourless, odourless and allergenic free organic raw material. It, however, has a slight viscosity with a sweet taste when used in lip balm. Its humectants liquid is used as an agent in cosmetics soaps, shampoos and other households. As a natural source, Glycerine is invaluable with emollient properties that softens and soothes the skin. It also has the capability of attracting moisture to the skin. Therefore this is the main reason; it is used in the manufacture of skincare products. http://www.gshflag.com/cosmetic-material/