The hand-forged Oseberg iron lamp should be dusted regularly with a soft, dry cloth. For heavier soiling, a slightly damp microfiber cloth can be used; be sure to dry the lamp thoroughly afterward to prevent rust. To safely extinguish the flame of the Viking bowl lamp, do not blow it out, but extinguish it by cutting off the oxygen supply (for example, with a suitable metal lid or a grease fire extinguisher if oil was used). Occasionally treat the iron surface with a little oil or wax to protect it from corrosion.