Giant NPC's hair sitting inside head?

I'm entering giant NPC's into my game that look like normal people. One of the things that includes is putting hair on them. At normal player size, the hair stays perfectly on the head, but when I size up the NPC into a giant and hit run, the hair falls to the middle of the head as shown: https://imgur.com/a/9acVn

Resizing the hair doesn't work and moving the hair in edit mode so it's floating above the NPC doesn't let it fall perfectly on the head. No matter where I put it above the NPC, it still falls to the same place. Again, normal player sized NPC's walk around with perfect hair no problem.

Very new to scripting and haven't been able to find a solution to this online. Is there a script for this? Let me know if I'm missing something obvious.