The brightest of the bunch, this iridescent polish changes from a baby blue to moss green depending on the light. (You'll also catch hints of purple and gold shimmer in there.) A third coat is a must for a smooth, opaque manicure, but you'll be able to skip topcoat—this polish is that shiny.
Metallic aqua nail polish sounds out-there. But these rich versions look like the deepest depths of the ocean-or to put it simply, they're actually really beautiful. You only need two things to pull off the look: basecoat (without it, a metallic finish makes nails' ridges too obvious) and one of our favorite blue-green lacquers. Ready to meet your new colorful manicure?