Why does a hat turn yellow after being left in the cabinet for a winter?

Most of the washing detergents and other washing decontamination products used in the washing process of white fabrics contain a small amount of chemical elements, and some trace chemical elements will be adsorbed in the fabric after washing, and after a long period of storage, they will have a chemical reaction and turn yellow. If it is very yellow, there is also a possibility that the quality of the white cloth is not up to par, white is called bleaching in the professional name of the cloth, the original cloth color is not white, the process of making white cloth is treated with bleach, too much bleach after a long time of chemical reaction will definitely have the phenomenon you described.

The practice of yellowing white fabrics is for reference:

1) Clothes will turn yellow, most likely caused by the weakening of fluorescent agents, if you want to restore the clothes to white and bright, you have to think about it.

Rice washing water + orange peel is simple and effective:

After keeping the rice washing water or putting the orange peel in a pot and boiling it, soak the yellowed clothes in it and scrub them to make the clothes white. Not only is it simple, but it is also not like the fluorescent brightener on the market will produce *** and will not hurt the clothing, which is a good way to try.

Yellow stains caused by sweating, remove with ammonia:

Sweat stains caused by sweating, because sweat containing fat is easy to condense in the cloth fibers, so add about 2 tablespoons of ammonia water when washing, soak for a few minutes, scrub it, and then wash it with water, and treat it according to the general laundry procedure, you can remove the yellow sweat stains!

2) Sometimes, white clothes or light-colored clothes will turn yellow over time, and the main reason for the yellowing of white or light-colored clothes is the oil secreted by the human body, especially the clothes made of polyester fabrics, which are more prone to yellowing. In addition, there is the residual fertilizer residue (most obviously seen in the tail ketone flax fibers) during washing, which will cause large areas of yellowing of the clothes if they are not rinsed well. There are ways to get rid of this phenomenon, such as using a lot of detergent when washing clothes that are resistant to high temperatures.

A traditional way is to hang the yellowed garment in the hot sun, but before that, the yellowing area should be topped with fresh lemon juice, salted and gently rubbed.

Warning: Handle with caution and avoid using chlorine bleach. Fabrics such as Spandex, silk, wool, etc., can be made yellower by contact with chlorine bleach.

3) If the white clothes are left for a long time, the clothes will turn yellow, and the yellow stains on them are mainly protein, and spinach will release dissolved protein ingredients after boiling.

1.Buy a handful of spinach, after boiling hot water, scoop up the spinach and leave it for the soup to set aside.

2.Rub the area with yellow stains in spinach water and soak for 10 minutes.

3.After soaking, remove the laundry and wash it in the normal laundry routine. Finish. The clothes are white again!

It was dirty before, and if you didn't wash it, it would turn yellow, and you couldn't contact the sun for a long time!

If it's really moldy, it's gone9.

Throw it away.