* Preventing Runs: Hairspray is thought to create a barrier that can help prevent small snags or tears from turning into full-blown runs. The idea is that the hairspray stiffens the fibers slightly, making them less likely to unravel.
* Reducing Static Cling: Hairspray can help reduce static cling, which can make tights stick to clothes uncomfortably. The polymers in hairspray are thought to create a less static-prone surface.