Stainless steel sinks are durable, but over time they can become coated with plaque and develop dark spots.
The problem is difficult to deal with, but possible.
For this, it is worth paying attention to folk remedies.
Experienced housewives recommend sprinkling soda, chalk, talc or even starch on dark spots. Then rub the product with a damp sponge.
If necessary, repeat the procedure.
But it is important to remember that hard sponges and brushes cannot be used, otherwise scratches will remain on the surface.
As for limescale, it is better to remove it with vinegar. It is necessary to spray it on the dirt, and after a few minutes the stains should be wiped with a clean and soft cloth or sponge.
If you want to prevent the problem, you need to wash the sink daily. A regular dishwashing detergent will do for this type of cleaning.