I really love mine. Headaches, not sure about. I’m still getting them (but I’m also chronically dehydrated, so I’m not the best judge). I heard a crunch with mine; my friend had a pop rather than a crunch. I’d recommend it, though. It’s probably one of my favorite piercings :) and didn’t hurt as bad as some of my other piercings
I got mine for both headaches and aesthetics, love the looks of it and is my only ear piercing I could sleep normally with soon after getting it. For headaches I haven’t had much luck but I also have other common issues like trouble sleeping, bad sinuses, and teeth grinding that don’t help the headaches. Overall I would recommend I love my daith
while i don't have a daith, i did look into them while i still had horrible migraines, and they're not 100% confirmed to help with headaches - it's more of a case-by-case basis. if you are dealing with major headaches though, i'd recommend getting checked for a tongue tie, since that's what was causing mine (weird, ik)