How can I effectively clean a dirty shower to restore its cleanliness and hygiene?

To effectively clean a dirty shower and restore its cleanliness and hygiene, start by spraying the surfaces with a mixture of water and white vinegar or a commercial cleaner. Let it sit for a few minutes to loosen dirt and grime. Scrub the surfaces with a brush or sponge, focusing on areas with soap scum and mold. Rinse thoroughly with water and dry with a clean towel or squeegee to prevent water spots. Repeat regularly to maintain cleanliness.