By mixing these elements, a special paste will be formed that will be a real panacea for the bathroom sink and will not only be a preventative solution, but also a product that will make existing marks disappear.
Below is the exact procedure to create the paste:

The first thing you need to do is heat some water and dissolve the salt in it, otherwise you won’t get the desired effect. Squeeze the lemon and filter its juice and then add it to the salt. Then add the vinegar, mix and set aside. The next step is to take citric acid and dissolve it in water . When it has melted, add it to the rest of the ingredients set aside. Then pour everything into a spray bottle.

Now you can spray it on the sink! It is recommended to let it sit for at least half an hour . You can repeat this operation until you achieve the desired result. This solution can also be used on other surfaces in the bathroom such as showers or taps.