Nails Inc. Magnetic Attraction Magentic Nail Polish: We’ve been blabbing on about how magnetic nail polish is so trendy for a while now, and we’ve had a chance to try a bunch. This version by Nails Inc was the easiest to use that we found. It comes in three colors–Big Ben (metallic gold), Trafalgar Square (metallic silver), and Houses of Parliament (metallic blue/purple). The magnet in the cap makes a wavy, swirly effect. We’ve been admiring it on Hayley here at our office, who was happy to be a guinea pig for it. ($16, Sephora Exclusive)