And it's why teens everywhere can't stop posting their own makeovers online or, as they call them, Glow Ups . But these aren't quite instant makeovers, these are transformations of ugly ducklings into swans over the space of a few years. So it got some of us at Refinery29 thinking about our own Glow Ups and it turned out a lot of them were pinned to our eyebrows – or rather our gratitude that they ever grew back.