To protect the material from cracking and maintain its transparency, the lantern should only be cleaned under running, warm water without harsh detergents and then thoroughly dried. Since horn is a natural material, it must be regularly rubbed with a neutral care oil or cooking oil to remain supple and prevent the surface from drying out or becoming cloudy. Absolutely avoid cleaning in the dishwasher, as well as prolonged exposure to moisture, heat, or extreme temperature fluctuations.