What it is: A superslim, full-coverage lipstick that provides Yves Saint Laurent's most luxurious, ultra-full, long-lasting matte finish yet.What it does: Available in couture-inspired shades developed for every skin tone by creative director Tom Pecheux, this lipstick saturates your lips in ultra-rich, highly pigmented matte color that feels weightless and incredibly comfortable on your lips. The nondrying, creamy formula glides on effortlessly and stays put all day so you don't have to…