What It Is:A two-step system for visibly plump and firm skin. The revolutionary night and day system features Shiseido's proprietary Japanese Hyaluronic Acid. Rapidly diminish the signs of time with the breakthrough MolecuShift Technology, which first shrinks and then enlarges hyaluronic acid molecules to volumize the skin from within. In the evening, Infill Serum delivers shrunken hyaluronic acid molecules to be more effectively absorbed into skin. In the morning, Full Expansion Serum expands h