Whether you plan on dressing like a unicorn for Halloween [1] or IRL, it's time you owned a rainbow highlighter. And no, they're not all sold out like the OG [2]. When cruising Etsy, we found tons of fantastic options to give you a mermaid sheen on your cheeks, your lids, and anywhere else you want to colorfully sparkle. Keep reading to discover some of our favorites. And don't forget, you can also DIY your own [3]!