Summer is here, the pool is calling, and you want your eyes to pop — without losing a lash mid-lap. If you've ever wondered whether you can pull off false eyelashes at the beach or in the pool, you're not alone. The global false eyelash market is sitting at a cool $2.45 billion in 2026, and half-lash styles — known as demi lashes — are having a serious moment. But here's the million-dollar question: can demi lashes actually survive a swim? The short answer is yes — if you choose the right lashes, prep them properly, and follow a few non-negotiable rules. As Lina, I've tested these through chlorinated pools, salty ocean dips, and even a rogue wave or two. Here's everything you need to know.