A process of preparing a cross-linked polysaccharide product including hyaluronic acid and dextran, the process including the steps of: (a) providing a hyaluronic acid and a dextran (b) binding the dextran to the hyaluronic acid by ether bonds using a bi- or polyfunctional cross-linking agent, wherein the hyaluronic acid provided in step (a) is a cross-linked hyaluronic acid gel, and the dextran provided in step (a) is a non-cross-linked dextran and wherein step (b) includes cross-linking the dextran to the hyaluronic acid by ether bonds using a bi- or polyfunctional cross-linking agent.