As a common point of reference about germs. It’s an almost universally recognized form of hygiene. But we never got far enough to relate it to the strangers’ hair thing. Though if she was using hair from sources she knew were sanitary, I was just curious about how it worked. Like… does she just glue it on there or… what? I was trying to get her to describe it but she didn’t. She just kept naming items. Have you seen them? What are they like?