The answer to 'how to clean sink' is to use a mild abrasive cleaner and a soft cloth or sponge to scrub the sink. Start by removing any visible debris or buildup, then apply the cleaner and scrub the entire sink surface, including the drain, faucet, and any other fixtures. Rinse thoroughly with clean water to remove all the cleaner. For tougher stains or mineral deposits, you can use a small amount of white vinegar or baking soda as a natural cleaning agent.
It's important to clean your sink regularly, about once a week, to prevent the buildup of grime, soap scum, and hard water stains. If you notice any persistent clogs or drainage issues, it's best to call a professional plumber to inspect and address the problem.