Our Favourite Hyaluronic Acid Serums – That Work! If you want skin that’s hydrated, plump and glowing, a hyaluronic acid serum will do all of that and more, due to it’s ability to hold 1000 times its weight in moisture. So if you’re noticing more fine lines, here are our favourite hyaluronic acid serums. Niod Multi-Molecular Hyaluronic Complex   Multi-Molecular ...