If you are asking for some solution for recovering the white color of the white clothes, as well as their freshness, here is the solution.
Place a copule of crystals to ten liiters of water in order to get a pink solution, and stir 200 grams of your regular detergent in it. You should not add additional potassium permanganate as this will not improve the effect. Then, soak the white laundry in the solution, and use a nylon bag to cover them. Leave the clothes thus for at least 4-5 hours, or for best effects, overnight.
Then, move the laundry to the laundry machine, and wash them as normally.
Also, you can do things in the opposite way, you can initially wash the clothes, and then leave them in the solution to soak.
Next, rinse them and hang them. If needed, you can repeat the entire procedure once more, until you are completely satisfied with the result.
Note that you can also use baking soda to whiten your clothes. It is cheep, affordable, and enormously effective as well.
You should mix 2-3 tablespoons of baking soda with the detergent you usually use. This will lower the hardness of the water, and it will also boost the power of the detergent. You can add some baking powder to the compartment where you add the detergent, and wash the laundry.
This will provide excelent effects, and you will be amazedby the results! Your clothes will be white and fresh as new!
Source Credit: healthybookteam.com