If you're willing to wait 30 days, LifeCell Lip Plumping Treatment, $49, promises lips that are 40 percent fuller (according to a clinical study). It contains peptides that stimulate your own lips to produce more collagen while moisturizing and minimizing wrinkles.

Lancer Volume Enhancing Lip Serum, $40, gives you the traditional lip plumper tingle (thanks to Sichuan peppers) for immediate blood flow and volume. Over time, it hydrates with coconut oil and protects the lips from free-radicals (think UV and pollution) with dragon's blood (an Amazonian herb).