The official description reads:
Introducing the first Rouge Pur Couture Vernis à Lèvres Glossy Stain Plump-Up for long-lasting volume impact! Give your lips an instant push up effect from the first application. Enjoy the invigorating and hydrating effect thanks to the hyaluronic acid enriched formula. Instantly Lips look fuller and voluptuous with shine that lasts up to 6 hours. Available in one universal shade, layer under any YSL lip product for a couture lip or alone for a naturally full look.
How to use: Wear it alone or pair it with another lip product.
On the plus side, I love the way this feels...not too glossy, not too tacky. Perfect.It adds little to no color, which is what I expected. Worn alone, it looks very nice. It's plenty shiny, has very subtle shimmer, and it lasts for hours. My lips do feel extra hydrated and soft, but I just wish it made my lips look fuller, as it states in the description.
Plump Up retails for $36.00, and is available at Yves Saint Laurent's web site, Bloomingdale's, Nordstrom, and other retailers.