Tie-dye your hair! Because it’s summer, and why not??Posted on May 15, 2018 Why Wear a Tie-Dye Shirt This Summer When You Can Tie-Dye Your HAIR? https://t.co/dLsWlvMCIO pic.twitter.com/WYVIf5mApk — Cosmopolitan (@Cosmopolitan) May 15, 2018 Oh goodness. It’s happening. It’s happening again. It always does. What’s going to be next, peppermint swirl hair?