A first-of-its-kind custom-blend hydrator that hydrates and treats your main skin concern, your way. Combines a hydration base of your Dramatically Different Moisturizer with Active Cartridge Concentrate for Fatigue. Dramatically Different Moisturizers hydrate all day and protect against skin-damaging pollution. Help strengthen skin's moisture barrier, so more moisture stays in. Slip on easily, absorb quickly. Concentrated actives in the cartridge energize and boost glow, helping to revive tired, dull-looking skin. *Notice some extra space in your hydration base? That allows for the addition of the active cartridge concentrate.