innisfree Hyaluronic Acid Active Mask 25ml X 5eaA hydrating sheet mask infused with 8 kinds of hyaluronic acid. This gentle sheet mask hydrates throughout different layers of the skin, without weighing it down. Made from a soft and delicate yarn, our ultra fine Active Masks offer functional formulas that are gentle on sensitive skin. Each mask is infused with a low molecular hyaluronic acid that absorbs deep into the skin, leaving it feeling soft, supple and plump!