NexGenVideos on Instagram: "Hair spray is governed by Polymer Film Theory, where synthetic resins like polyvinylpyrrolidone (PVP) are dissolved in a solvent and propelled as a fine mist. Once the solvent evaporates, these polymers form a transparent, flexible film that creates "spot welds" between overlapping hair fibers, locking the style in place while maintaining a degree of tensile strength. In 2026, the industry has shifted toward "Biopolymer Encapsulation," using plant-based starches that