The Grudge. I saw it when I was maybe 7 or 8? I was at an Aunts house with some older brothers that had it on. Honestly I barely remember actually watching it, but good lord it scarred me until I was at least 18 or so. I could never get the image of hair growing out of random places, turning into something terrifying out of my head whenever I was showering and stuff. I still haven’t rewatched it :D I’m quite a scaredy cat when it comes to horror movies already and I could totally see it giving me nightmares again if it’s anything like I remember as a kid