@slothrop @Frances_Larina @failedLyndonLaRouchite @robb here's an overview of some wrinkle resistant finishes: basically, coat the fabric in a resin. Which kind does your shirt have? No, we're not going to put that on the label for you.
https://textilelearner.net/wrinkle-resistant-finishing/
@slothrop @Frances_Larina @failedLyndonLaRouchite @robb an investigation into wrinkle resistant coatings and other chemicals in clothing
https://www.theguardian.com/fashion/2023/jul/02/fashion-chemicals-pfas-bpa-toxic