I've tested loads of lip products, and I've never become so obsessed with any as I have with this: The Clinique Vitamin C Lip Smoothie. It's like a combo lipstick/gloss, and adds a great splash of color without looking too overdone. The "Absolute Acai" shade is my fav. It's $17.50 at Clinique counters. If you're going to keep just one makeup item in your purse for those oh-my-gosh-I-need-just-a-little-something-now moments, this is a good choice.
-- Kristy Eckert