Glycerin. Glycerin is an ingredient that can be found in many beauty products because of its moisture locking properties. It is a form of sugar alcohol that is available naturally in vegetable oils and can also be the byproduct of soap making.
Definition of wheel and axle : a mechanical device consisting of a grooved wheel turned by a cord or chain with a rigidly attached axle (as for winding up a weight) together with the supporting standards
wheel. 1  a circular frame with an axle connecting to the rudder of a ship, for steering: He took the wheel during the storm. 2  a paddle wheel. 3  a propeller.