@wagakure I think you'd have to ask directly if you want to know for sure, but it looks like this person made it in blender. I think it comes from the same mesh from lapwong's ponytail, but it's so small and hard for me to tell. They tweet about using blender to make edits but also post booth links to credit assets, so I wouldn't be surprised if what you see in the photo is their own edit (hence no booth link credit)!

https://x.com/yoritobavrc/status/1724313119609233890
https://x.com/yoritobavrc/status/1724313115654037838

I hope you can at least find similar hair, or you can attempt to create your own custom tendrils from the Lapwing ponytail mesh as well. Sorry I couldn't find anything else, this is a hair I don't recognize very well. 🥺