1 Keep the rice washing water or put the orange peel in a pot and add water to cook it, and then soak the yellow clothes in it to wash it, which will easily make the clothes turn white again. Not only is it simple, but unlike the fluorescent whitening agent sold in the market, it will have side effects on the skin and will not hurt the fabric. This is a good method worth trying.

2. When washing, add about 2 tablespoons of ammonia water, soak for a few minutes, rub it, then wash it with clear water, and follow the general laundry procedure to remove yellow sweat stains.

3. The fat residue left in the washing process (the most obvious found in the tail ketone flax fiber), if it is not cleaned, will make the clothes yellow in a large area. There are ways to get rid of this phenomenon, such as using a lot of detergent when washing clothes with high temperature resistance. A traditional way is to hang yellow clothes in the hot sun, but before that, you should put fresh lemon juice in the yellow place, add some salt and rub it gently.