Introducing Zoya's First Annual Earth Day Nailpolish Exchange. You send in your old, half-empty bottles of polish to be disposed of properly and Zoya will replace your old colors with new, updated ones. Their polishes are formaldehyde, toluene, camphor and dibutyl phthalate free- the only thing i get out of that is that they are easy on the planet! Just send in 6 or more bottles and Zoya will replace them-bottle for bottle-with new colors from their line. Just pay $3 per bottle and you've got yourself a new polish wardrobe! Check it out at http://www.zoya.com/earthday/