If you've been dying to try Lancome's new Oscillation vibrating mascara (like we have!), you may have your chance this Thursday. Lancome is having an one-day sale at a few of their stores and online at the Lancome and Sephora web sites. It will be selling for $34 while supplies last. Don't stress too much though; if you don't snag one Thursday, you can get it when the product is officially released in the fall.

Here's where you can buy it:

Online: Lancome-usa.com and Sephora.com

Atlanta: Macy's at the Lenox Square Mall

Brea: The Lancome boutique at the Brea Mall

Costa Mesa: Nordstrom at South Coast Plaza

Chicago: Macy's on State Street and Bon-Ton at the Yorktown Mall

Dallas: Dillard's and the Lancome Boutique at NorthPark Center

Houston: Neiman Marcus at the Galleria

Miami: Macy's at the Dadeland Mall

Manhattan: Bergdorf Goodman, Bloomingdale's 59th Street, Lord & Taylor, Macy's Herald Square and the Lancome boutique on Columbus Avenue

San Francisco: Macy's Union Square

Santa Clara: The Lancome boutique at the Valley Fair Mall

Short Hills: The Lancome boutique at the Short Hills Mall

If you are lucky enough to get your hands on one, be sure to tell us what you think!