If you scroll through Instagram or TikTok today, you will see something that was unimaginable twenty years ago: twenty-year-olds getting Botox. The trend of "preventative aesthetics" has exploded. Young people are freezing their foreheads, filling their cheeks, and laser-blasting their skin before they even have a single deep wrinkle. The logic seems sound: "If I stop the skin from moving now, it won't wrinkle later." But as...