Final answer:
Liners like eye liners define eyes, bases such as lip balms moisturize and protect lips, and varnishes in paints provide a protective and enhancing finish. Each product has specialized components like waxes, pigments, and polymers to fulfill their respective roles.
Step-by-step explanation:
The main function of liners like eye liners is to define the eyes by applying around the contours of the eye with aesthetic effects. Primarily, they consist of waxes and pigments such as black iron oxides, titanium dioxide, and sometimes Prussian blue, to glide easily onto the skin and provide the desired color. Bases such as lip balms and primers are formulated to moisturize, protect, and sometimes tint the lips, with some containing sunscreen for additional protection. Varnishes in the context of paints, refer to the polymers used as binders giving paint its gloss, durability, and toughness.
Each of these products has a distinct role: liners for eye definition, bases for lip care and priming, and varnishes as a protective and enhancing finish for surfaces. Components like mica in eye shadows add bulk and texture, while polymers in paints provide the binding properties needed for paint application. Similarly, diluents in paints adjust the viscosity and aid in the application by serving as a carrier for the non-volatile components.