Eye Pencil Rig

The hardness or rigidity of a beauty pencil core is controlled by waxes in the formulation which can be adjusted to the desired melting point of the finished product. The rigidity of a wax pencil core must allow the tip to be sharpened to a point to provide a 'defined line' application without scratching the eye of the user. The product developer must tackle the challenge of creating a product which achieves this but does not become crumbly or brittle after prolonged or low-temperature storage.

The Eye Pencil Rig provides the means to quantitatively measure the hardness of pencil tips such as those for eye or lip-lining products. Results will assess such process variables as the modification of wax content or product quality as a result of extreme temperature conditions or shelf life.

Material presented in pencil form.