As a self-diagnosed lip gloss addict, and avid collector of all things beauty-related, I've tried my share of mood glosses and lipsticks. They're a cool yet undoubtedly gimmicky concept... I mean, no one really wants to put on a "surprise" lip color and find out later that she's been walking around with blue lips. Givenchy's take on the fad, however, puts a pretty practical spin on the childhood favorite. Created with the help of Liv Tyler, Givenchy's Gloss Revelateur looks completely clear in the tube, but reacts with your skin tone and your lips' unique pH to transform into your perfect, flattering shade of pink. Sure, you're still dealing with the unpredictability of a "surprise" lip color, but at least you're guaranteed that the result is your own personal, scientifically perfect hue! And who wants to argue with science? No more holing up in the makeup aisle, smearing dozens of nearly-identical glosses and lipsticks all over your hands in your search for the perfect shade. Sounds like a magic lip gloss worth believing in! Look out for the gloss when it hits stateside starting August 20th!

- Alexandra Gambardella