It often happens that housewives who start cleaning discover that the bottle with one or another cleaning product is empty.
Fortunately, we can offer several options at once that will free you from the need to go to the household chemicals store if you do not have a special composition for cleaning the bathtub at hand.
So, if the degree of contamination is not serious, a regular dishwashing detergent will be a worthy alternative.
It will easily deal with the remaining water stains.
It is enough to apply a few drops of detergent on a sponge, and then wipe the walls and edges of the bathtub with it. After a few minutes, wash off the foam, and along with it the dirt, with a stream of water from the shower head.
If the task is more serious and you intend not only to clean the bathtub, but also to whiten it, a mixture of equal amounts of baking soda and washing soda will come to the rescue.
Add a little water to the dry ingredients to form a paste, then scrub the bathtub with the resulting cleaning solution.
At the final stage of cleaning, wash off the composition with vinegar (citric acid will also work) and rinse with clean water.