The skin of the lips, with three to five cellular layers, is very thin compared to typical face skin, which has up to 16 layers. With light skin colour, the lip skin contains fewer melanocytes (cells which produce the melanin pigment, which gives the skin its colour). Because of this, the blood vessels appear through the skin of the lips, which leads to their notable red colouring. The skin of the lips forms the border between the exterior skin of the face, and the interior mucous membrane of the inside of the mouth. The lip skin is not hairy, and does not have sweat glands or sebaceous glands. Therefore it does not have the usual protection layer of sweat and body oils, which keep the skin smooth, inhibit pathogens, and regulate warmth. For these reasons, the lips dry out faster and become chapped more easily.

The moisture content of the lips depends to a great extent on the quality of the extra cellular matrix. This is a network of "hydrated macromolecules", "Glucosamines" and "hyaluronic acids" (a water-binding gel). These promote the viscoelasticity and swelling of the subcutaneous tissue. The collagen plays also a key role in the 3D architecture of the associated tissue.

The patented 3-D formula of PLUMP&SHINE achieves a stimulation of the body’s own fibroblast for the collagen synthesis by 350 % and the production of hyaluronic acid by up to 146 %.

This active substance has been combined with the smoothing and nourishing ingredients from lip balm to produce this revolutionary product.