Cynthia Erivo’s bold, high-fashion nails are trending across social feeds, red carpets, and beauty magazines. Her long, sculpted, ultra-detailed sets make a statement—sharp lines, intricate art, ...

If you’ve been scrolling on TikTok and caught yourself wondering “What is the red-nail theory?” let us explain. Among the many beauty trends that have gone viral on the platform, the red-nail theory ...