Why does the paper turn yellow when washing shoes and drying them?

Personally, I think that drying shoe veneers is mainly for water absorption and dirt absorption.

After wearing the shoes for a long time, the dust will adhere to the fabric of the upper, and the dirt will generally partially dissolve when exposed to water, and will be yellow-brown. The facial tissue just has a strong ability to absorb water, and at the same time absorbs the water, it also precipitates these dirt solutions together, making the surface look very white and clean (in fact, there is still dirt inside), coupled with sunlight, the water on the tissue evaporates rapidly, leaving the precipitated dirt solid attached to the tissue, so the effect of the shoes with paper is better after the sun. On the contrary, the precipitated dirt solution adheres to the shoes due to the lack of paper drainage and adsorption, and the factor of gravity will present a halo from top to bottom from shallow to deep.

To sum up: shoes without stickers will turn yellow after sunburning.

PS: Hmm. Well. I think if you add the word "extinguish" to your name, it should be more domineering!! ~

I used to have the same confusion as you, but it is recommended that the landlord use warm water and brushes, brush several times, or do not use soap and other detergents to try brushing, after drying you will find that only with detergent brushing, but there is no deep bleached shoes will be yellow, and without detergent and deep bleached shoes will not be yellow. Then the reason is clear, the yellowing is the residue of dirt and detergent left on the shoes.

Because laundry detergent and soap mostly contain alkaline substances, it is generally very difficult to remove them when rinsing with water, and some of them will remain on the shoes, as well as a little rust residue in the water, and this alkaline substance will turn yellow when exposed to the sun.

Prepare the ingredients: baking soda, toothpaste, toothbrush, toilet paper, a basin, water.

1. Prepare a packet of edible baking soda and add the baking soda to the water.

2. Stir the baking soda well, and then soak the shoes to be washed.

3. After soaking, sprinkle an appropriate amount of baking soda evenly on the area that needs to be cleaned.

4. After soaking, the stains on the shoes will soften, and the shoes should be brushed with a waste toothbrush.

5. You can see that the yellow stains and other stains have been brushed off.

6. Wrap the washed shoes with a napkin and take them to dry, so that the yellow stains on the surface of the shoes will be transferred to the napkin.

Wrapping your shoes with a white tissue will make it a little better.

Generally, white shoes are easy to tan yellow, and the easiest way is to put a white toilet paper on the shoes, and try it out in the sun.

When brushing shoes, use toothpaste, so that the white of the brush, after brushing, wrap him in toilet paper, and it will not be yellow.

The reason why the shoes turn yellow after brushing is because the soapy water or laundry detergent water in the upper is not thoroughly cleaned, and the sunlight evaporates the water, and the concentration of soapy water and laundry detergent water will make the syrup yellow and hard.

The best thing to do is to wash it again as soon as you notice that it has turned yellow, and don't wait for those yellow things to go deep into the fibers of the shoes, which will be difficult to clean.

Cover with a layer of toilet paper because toilet paper is easier to be dried by the sun than the material of the upper, and it is easier to absorb moisture, once the toilet paper on the shoe is evaporated, a part of the water is no longer saturated, it will immediately reabsorb the moisture on the upper, and the moisture will be mixed with those impurities that cause the upper to turn yellow, that is to say, those things are sucked into the toilet paper with moisture, which is why when the shoes are dried, Toilet paper must also be dry, and there will be yellow marks in many places on the toilet paper.

First. It can absorb water, because there will be residual water on the washed shoes, and there will be residual soap in the water, if the water stays for a long time, it will inevitably hurt the shoes and turn yellow, so wrapping it in paper will wash the water out and reduce the residence time of the water on the shoes.

Second. Even when drying shoes, they will be more or less exposed to the sun, and covering them with paper can also protect them from the sun.

Because it is impossible to wash clothes and shoes absolutely clean, there is still a small amount of dirt dissolved in the residual moisture, such as egg whites.

The so-called yellowing of the limbs is actually the product of the oxidation of those dirty things in the air.

When drying, the surface moisture evaporates first, and the moisture content inside the shoe is higher than the surface layer, and the moisture will move from the inside to the outside. At this time, the dissolved dirt in the water will also accumulate on the surface of the shoe with the movement of water, and after the water evaporates, the dirty matter will remain on the surface of the shoe. This will look like the shoes will be a little yellowish, especially if they are white.

If the shoes are tightly wrapped in toilet paper, dirty matter will remain on the top layer of toilet paper. This is also the reason why toilet paper is yellow. Shoes are cleaner.

In the same way, white clothes should be dried in the opposite direction.

Principle: Toilet paper is bleached with sodium hypochlorite, calcium hypochlorite, and has its residue. The toilet paper of the seepage cover the upper of the shoe, and the fluorescent brightener in the shoe is activated by the action of sunlight to restore it to its original state.

Put the white cloth shoes in clean water, add laundry detergent or soap, scrub them clean, and then change the basin of water.

Then add a few drops of blue ink to the water (note that only drops are enough), wait for the water and ink to be combined, then put the shoes in the water, soak them for a few minutes, and then rinse them with water.

Generally, it is difficult to remove all of them when rinsing with water, and some of them will be left on the shoes, and this alkaline substance will turn yellow when exposed to the sun. The blue ink chemical substances can be mutually dissolved, so that the alkaline substances are completely removed, and then put in the sun will not be yellow.

The detergent on the white shoes is not cleaned, and wrapping them in a paper towel can prevent the white shoes from turning yellow.

Prepare tools: toothpaste, toothbrush, paper towel to taste.

Treatment: 1. Soak the yellowed white shoes in clean water and moisten them.

2. Squeeze an appropriate amount of toothpaste on the surface of the shoes.

3. Use a brush to clean the inside and outside of the white shoes again.

4. Soak it in clean water, rinse off the foam on it, and then take out the water control.

5. Wrap a layer of paper towel on the surface of the white shoes and place them in a cool and dry place to air dry.

Well, it's because after the sun, it's the opposite of the substance on the surface of the shoe.

should be the result.

Fundamentally eliminate the original cause of yellowing of inner shoes:

First of all, try to use neutral detergent when brushing shoes, and when you wash and dry, you can take white paper (preferably white toilet paper) to wrap the shoes whole, and the shoes will find that there are no yellow marks on the shoes when they are dry, but there are many yellow marks on the toilet paper. In addition, if you wait until the shoes are very dirty before brushing, you must use detergent to wash them clean, and you can use less detergent by wiping them with a soft cloth dipped in water.

You can scrub your shoes with soap or laundry detergent, soak them in beer for three minutes, then take them to the balcony in the shade and cover them with toilet paper to dry.

If the shoes have turned yellow, you can buy lead powder in the store to brush, wash the shoes, brush them when the shoes are wet, and then wrap them in paper to dry to ensure that the shoes are as white as new. Pay attention to the boots of the Peking Opera actors, the boots are absolutely white, that is, they are painted with lead white.

84 and other water with bleaching effect should be used with caution and is corrosive.

Note: First of all, try not to expose your shoes to the sun after brushing.

Secondly, after brushing the shoes, cover them with absorbent paper (toilet paper, facial tissue) and put them in a ventilated place to dry.

Do these two, and the white shoes will not turn yellow.

After washing, it is best to dry in the sun and not let it dry in a humid climate. This will turn yellow. Choose a sunny day, after washing, stick a absorbent paper towel on the upper of the shoe, put it in the sun and expose it to the sun, and when it dries, you will find that the paper towel spread on the shoe turns yellow and the shoe is white.

White shoes are easy to get dirty, so be sure to stick a tissue when you dry them. Sneakers wearing, washing, maintenance instructions Clean your shoes regularly, wipe them with a damp cloth (be careful not to use too much water), squeeze some toothpaste on them where there is a lot of dirt, and then clean it with a toothbrush.

Shoes will turn yellow after drying because the soapy water or laundry detergent water in the upper is not thoroughly cleaned, and the concentration of soapy water and laundry detergent water will increase after the shoes are dried, which will make Xie Zi turn yellow and hard, covering the surface of the shoes. When washing shoes, wash them with water after washing them with laundry detergent. If you find that the shoes turn yellow after drying, you can brush them again, and then cover them with a layer of toilet paper when drying them, so that these things that make the shoes yellow will adhere to the toilet paper.

This will protect the cleanliness of the upper.

After washing, don't put it in the sun and expose it to the sun, wrap a layer of toilet paper after washing, and put it in a ventilated place, so it won't turn yellow.

That's because the shoes are soaked with sweat, and they can only be treated by soaking them in light 84 disinfectant water for two hours, and then washing them with clean water.

After washing the shoes, cover them with a napkin and leave them in a cool place to dry without direct exposure to the sun so that the shoes do not turn yellow.

1. The reason why shoes turn yellow when dried is because of the soapy water or laundry detergent water in the shoes.

Not thoroughly cleaned by sunlight.

After the water is evaporated, the concentration of soapy water and laundry detergent water increases, which will make the shoes yellow and hard.

2. Most of the laundry detergents and soaps contain alkaline substances, and this alkaline substance will turn yellow when exposed to the sun, so when the shoes are yellow, the remaining alkaline substances should be washed first.

3. If the white shoes turn yellow for the first time, it is recommended to replace the detergent, try not to use laundry detergent, replace it with the washing liquid used for washing dishes, rinse it clean, and use toilet paper.

Wrap your shoes and place them in a ventilated place to dry.

1. The shoes need to be washed again, and when they are re-washed, you can dip the toothpaste to brush the yellowed shoes and the rubber part of the sole. After washing and drying, you need to wrap toilet paper on the outside of the shoes, and place the shoes in a dry and ventilated place to dry after the wrapping is completed, and try to avoid sun exposure.

2. When cleaning white shoes, you need to clean the white shoes with a soft brush, mainly to clean the dirt and stains on the surface. Dissolve a spoonful of baking soda in a small basin of water and soak the white shoes in it. After soaking for 20 minutes, apply soap or toothpaste to the upper of the shoe, scrub with a soft brush, rinse several times with water until no detergent remains.

If the stain on the shoes is stubborn, you can use hot water mixed with baking soda to soak the shoes, the effect is better.

3. If the shoes are fabric, local yellowing or local stains can be cleaned locally. Mix an appropriate amount of water and cleaning agent to wet the dirty place, then squeeze some toothpaste with a soft brush, gently brush off the dirt, and then use a soft brush to dip it in water to wipe off the residue of the toothpaste, cover the cleaned place with toilet paper, and dry it naturally in a cool and ventilated place.

1. If the shoes turn yellow after drying, you can use toothpaste to clean the yellowing part of the shoes, then clean the toothpaste with water, and finally find some white toilet paper to wrap the shoes inside and out;

2. Finally, take the shoes to the sun to dry, and after drying, remove the toilet paper and the shoes will return to white.