Explainer on Instagram: "This post features a 60-second video of friends using AR filter to prank a young man by dramatically receding his hairline, capturing his shocked laughter and a follow-up reaction from a woman horrified by her own filtered reflection. The content taps into the "Hairline Reveal Filter" trend that emerged in late October 2025, where users humorously expose exaggerated bald spots via app effects, amassing millions of views through relatable self-deprecation on aging. on Dec