**Yellow marks on them are usually formed by a mixture of sweat, sebum and washing residue that has not been thoroughly washed. Here are some effective ways to remove yellow marks on **:
Use table salt + laundry detergent
Soak the ** first, and then sprinkle an appropriate amount of salt on the yellow stain.
Then apply an appropriate amount of laundry detergent to cover the yellow stains well.
Soak for about 15-30 minutes, then gently scrub and rinse off with water.
Use toothpaste
Apply a small amount of toothpaste to the yellow-stained area, especially if it has bleaching ingredients.
Gently rub for a few minutes and let it sit for a while, then wash and rinse off as normal.
Use baking soda or starch
Mix baking soda or starch with water into a paste and spread evenly over the yellow stains.
Let it sit for a few hours or even overnight before washing it with your regular laundry routine.
Add salt or vinegar for pretreatment
Before washing, add an appropriate amount of salt or white vinegar to the water and soak ** for a period of time.
After soaking, wash according to the normal steps, salt has a certain decontamination and disinfecting effect, and vinegar can neutralize alkaline substances and help remove yellow stains.
Bleach should be used sparingly
For white cotton**, bleach can be diluted in an appropriate ratio in clean water (e.g., a 10:1 ratio).
Soak ** in bleach solution, be careful not to contact it directly**, and do not use it on colored clothing to avoid fading.
Sunlight to dry
After washing, try to dry naturally in the sun, ultraviolet rays help sterilize and reduce yellow stains.
Please note that for different materials**, such as silk, nylon and other delicate fabrics, you need to choose a gentle cleaning method and avoid strong chemicals. For stubborn stains, the above process may need to be repeated a few times to completely remove.
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