Yes, I did know about hemp being a possible replacement material, but I don't know if it reacts with formulations or not? There's a lot that goes into the packaging selection compatibility behind-the-scenes as well as material availability to meet the demands of individual brands, it's complicated.

Resources ⬇️
The Science of Beauty By Dr. Michelle Wong

https://www.fda.gov/cosmetics/cosmetics-laws-regulations/cosmetics-us-law#US_Law