What it is: A limited-edition nail polish in sparkling shades. What it does: This gorgeous nail lacquer dazzles, bringing a bit of the season to your nails. How to use: Begin with a base coat, then let dry. Follow with two coats of La Laque Couture, letting each coat dry. Finish with a top coat. Style Name: Yves Saint Laurent Dazzling Lights La Laque Couture Nail Polish (Limited Edition). Style Number: 5469817. Available in stores.