Early methods of making nail polish used a variety of methods that today look charming amateurish. One common technique was to mix clean scraps of movie film and other cellulose with alcohol and castor oil and leave the mixture to soak overnight in a container. The mixture is then stained and colored and perfumed. Though recognizable as nail polish, the product was far from what we have available today.The modern manufacturing process is very sophisticated operation utilizing highly skilled workers, advanced machinery, and even robotics. Today's consumers expect nail polish to apply smoothly, evenly and easily; to set relatively quickly; and to be resistant to chipping and peeling. In addition, the polish should be innocuous..
Extreme attention to quality control is essential throughout the manufacturing process. Not only does quality control increase safety in the process, but it is the only way the manufacturer can be assured of the consumer confidence and loyalty. A single quality of polish can lose a consumer forever. Regardless of quality control, no single polish is perfect; the polish always represent a chemical compromise between what is desired and what the manufacturer is able to produce.The nail polished is tested throughout the manufacturing process for several important factors=drying time, smoothness of flow, gloss, hardness, abrasion resistance, etc. Subjective testing, where the mixture or final product is examined or applied is ongoing. Objective, lab testing of samples, though more time consuming, is also necessary to ensure a usable product. Laboratory tests are both complicated and unforgiving, but no manufacturer would do it without them.
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