20 New Beauty Launches You Need in Your Stash This Summer

What it is: Cosrx Triple C Lightning Liquid ($27)

Why you need it: Soko Glam founder Charlotte Cho and K-beauty brand Cosrx teamed up to make this superpotent, nonsticky vitamin C serum, which is loaded with over 20 percent ascorbic acid to fade dark spots and illuminate your skin. Vitamin C serums need to be fresh to be effective, so this formula is produced in small batches and shipped directly from Korea to ensure you have a brand-new bottle.