What describes the dissolved salts deposited on a material's surface after water evaporation?

Efflorescence specifically refers to the formation of white, powdery deposits on surfaces due to the evaporation of water that has dissolved salts. When water moves through building materials like concrete or brick, it can carry these salts with it. As the water evaporates, the salts are left behind, crystallizing on the surface. This phenomenon is common in areas with high moisture and can be an indicator of moisture issues or inadequate waterproofing.

Other terms, such as oxidation, are related to chemical reactions involving oxygen and materials but do not describe salt deposits from evaporated water. Desiccation refers to the drying out of materials, while humidity relates to the amount of moisture in the air. Neither of these accurately describes the process or result of the deposition of dissolved salts on surfaces.