Specialized Cleaner for Ashy, Damp Walls & Efflorescence Remover

The user struggles with 'ashy white' walls that revert quickly after cleaning with soap and water, indicating a need for a more specialized, long-lasting solution. This product would be a powerful cleaner specifically formulated to effectively remove efflorescence (mineral deposits from moisture), mildew, or other residues typical of damp walls. It would address the aesthetic problem, providing a more permanent clean for interior surfaces affected by water damage, especially relevant in humid or leak-prone environments where generic cleaners fail.