- Oct 29, 2018 -
First of all, you can use the alkaline surface method, that is, after boiling the alkali surface for a few minutes, the water can be rubbed off the towel, which will make the yellowed towel soft and white. Another method is to expose the soap to the white clothes, wash the white clothes with soapy water or laundry detergent, rinse them, and then re-do the soap again. The soap exposure method is sealed in a plastic bag, and it is different from how to prevent the yellowing of the white clothes from being exposed to the sun as much as possible. One is direct exposure and the other is sealed exposure.