YSL Lip Plumper with SPF #10
Shades are Plum and Coral
Retails for $25

Description from Saks website: this new gloss instantly plumps-up lips while gently pampering them. In the heart of the formula, fill-in micro-spheres associated with YSL exclusive Hyalufix complex gently rebalance the lips' volume to offer them a natural fuller appearance. Vegetal oils specially chosen for their anti-free radical and nourishing properties ensure day-long comfort and well-being. SPF 10.

It feels like a treatment with no nagging or uncomfortable tingling or burning sensations. However, there are better lip plumpers out there. My personal favorites are from Duwop. Duwop's plumpers also feel like lip treatments but they actually physically alter your "smackers".
You will see a visible difference in your lip size.
The color selection is more vast and the price is better.
Duwop wins hands down.

List your favorite lip plump products in the comments.
http://shop.duwop.com/

Credits: Blogdorf Goodman