As the title asks, why did the War Boys in Mad Max: Fury Road cut Max's hair? There was a kid collecting the hair. Why?
You bring in an almost feral person from outside, beyond cleaning up the stink, you don't want them passing lice, bedbugs and whatever other vermin might be nesting in the filth that is their hair. Hygiene would be a practical reason for doing that.
i think the war pup collected the hair for the simple fact that he just wanted it, he had most likely never seen actual hair, considering the fact that he, and all the other war boys are bald.
They use the Hair to stitch up wounded War Boys, same explanation as to why the Organic Mechanic has patchy hair.
Maybe it's just their dress code, also if you observe closely they all had some white ash looking powder smeared on their head, so i think it's safe to concur that because the heat was too much a short or trim haircut is a better choice and also ash acts like a natural cooling substance, Maybe just maybe