Let’s go straight to the process!

The first thing to clarify is that if you have the soap stick instead of the Marseille soap in liquid version, you will first have to melt the flakes in a bain-marie.

This preliminary step will make the laundry much more homogeneous, compact and functional.

Well, once you have obtained the liquid soap, you will have to add it to the spoonful of baking soda, mixing well. If the mixture is too thick, you can add a little water to mix better.

Once the two ingredients are well combined, the cleaner will be ready!

How to use
Now the question is how to use it!

More specifically, the compound you have created can be used to pre-treat stains before washing them in the machine.

Otherwise, if you prefer hand washing, pour everything into the basin of warm water and let the shirts soak.

Remember to rinse them several times and always very gently to make sure that they do not form many creases and that they do not get damaged.

In the washing machine
Of course, you can also put the natural cleaner in the washing machine!

Simply pour 2 tablespoons into the detergent drawer and that’s it! But we also see some alternatives to use in washing to whiten shirts and have them as if they were new:

White vinegar: fantastic in cases like this, vinegar is very appreciated precisely for its effectiveness in the washing machine. You will have to put 1 cup in the detergent drawer or in a measuring cup to insert directly into the drum.
Lemon juice: it is also a good solution for whitening and to have clean shirts, 2 tablespoons in the detergent drawer will be enough.
Hydrogen peroxide: This remedy is to be used only on whites. In case of stubborn dirt, put 1 tablespoon of 10 volume hydrogen peroxide in the washing machine and that’s it!
Warnings
I remind you that it is essential to first consult the washing labels on the clothes so as not to damage the shirts.