Ultrapure Glycerine BP has many uses such as skin care, soap, toothpaste or mouthwash. It can also be used as a food softener to make it easier to eat.It is a colourless, viscous liquid. Glycerine is used in making royal icing, as a softener to make it easier to eat. It is also used in skin care products, soap, toothpaste, mouthwashes and a host of other daily products. Glycerine is commonly used in crafts such as soap making.