If you have noticed that your white clothes are gray after washing, you should not look for new products in the store. There is a genius trick for which you do not need extra money.
All you need is some baking powder and an aspirin tablet. You should put the aspirin directly in the drum with the laundry, while the baking powder goes in the pre-wash powder compartment and you put the liquid detergent in the main compartment.
It is washed by pre-washing at 90 degrees. The results will amaze you.