The answer to 'why is my bathroom greasy' is that a buildup of soap scum, hard water deposits, and airborne grease from cooking can cause a greasy film to develop on bathroom surfaces. This is a common problem that occurs over time as bathrooms get used regularly.
Some common symptoms of a greasy bathroom include a shiny, slippery appearance on tiles, countertops, and fixtures. You may also notice a sticky or oily feeling when touching surfaces. Grease and grime can accumulate quickly, especially in high-moisture areas like the shower or around the sink.