RenRen Flash Hydro Boost Instant Plumping Emulsion

BUY at Birchbox

It's essential to stay hydrated, since you can blame most skincare problems (think rough texture, wrinkles, and fine lines) on parched skin. In just two minutes, the hydra technology in this treatment gets to work: Hyaluronic acid draws moisture into skin cells, peptides ramp up circulation for all-over hydration, and ceramides act as a sealant against water loss.