The invention relates to a collagen product for medical or cosmetic applications such as healing or haemostatic dressings, implantable separating barriers, foils/sheets and membranes for guided tissue and bone regeneration, solid supports or injectable carriers of pharmacologically or cosmetically active substances or cosmetic products and face masks. This collagen product contains biopolymers chosen from the group of glycosaminoglycans which are bonded to the collagen substance, partly at least, by chemical bonds mediated by polyvalent metal cations. The chemical bonds are mediated by coordinately bonded compounds of metals chosen from the group of transition metals, preferably Cr, Zr, AI, Fe, Mn, Ti, and/or of polyvalent alkaline earth cations, preferably Ca, Mg, Zn, Ba, Sr. Furthermore the invention relates to the process of manufacture of said collagen product and uses thereof.
