This new Sulwasoo Bestsellers Trial Kit ($54) is a great way to test out the top products from the luxe Korean brand. First, there's the First Care Activating Serum (that goes on right after you wash your face to get it ready for the products that follow). Then there are three products that use red ginseng to hydrate, firm skin, and give you a glow — the renewing cream, renewing eye cream, and renewing serum.