Nail trend alert!!! “Nails, Inc.” has released a polish called Magnetic Attraction. The three metallic shades–gold, gray, and purple–contain iron powder and come with a magnet embedded in the cap. You apply a coat of the polish to each individual nail, and then hold the magnet over your nail to get a rippled effect. The effect is much more subtle than the crackle finish polishes. Will you try magnetic nail polish?