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
A solid disk or a rigid circular ring connected by spokes to a hub, designed to turn around an axle passed through the center. 2. Something resembling such a disk or ring in appearance or movement or having a wheel as its principal part or characteristic, as: a. The steering device on a vehicle. b. A potter's wheel.