Cosmedica Skincare Hyaluronic Acid Serum Looking for the ultimate hydration serum? Look no further than this Cosmedica Skincare Hyaluronic Acid Serum ($15). The serum is pure 100 percent hyaluronic acid and nothing else. It quickly soaks into your skin leaving you with all-day moisturise. The serum current boats over 7,000 positive reviews, so what else do you need to know? Image Source: amazon.com Cosmedica Skincare Hyaluronic Acid Serum $15 from amazon.com Buy Now