To clean the surface of the bronze Viking neck ring and maintain its natural patina, regularly remove loose dirt with a soft microfiber cloth or brush. For heavier soiling, a mild soap solution is recommended. Apply the solution with a slightly damp cloth and dry thoroughly immediately to prevent corrosion from moisture. For long-term care and protection of the patina, apply a thin layer of special bronze care wax or microcrystal wax. This slows down further oxidation and creates a protective barrier against environmental influences. Absolutely avoid harsh chemicals, abrasives, and hard brushes or metal objects, as these can irreparably damage the valuable patina or scratch the material.