Everyone should have the experience that a white sweater will turn yellow after wearing for a long time, which looks strange. Reasons for yellowing of white knitwear White clothes will turn yellow after wearing long, especially knitwear, which is difficult to clean after turning yellow, and always gives people a feeling of dirty. In the process of wearing clothes, you will encounter many protein stains. If the water temperature is too high during washing, the protein will solidify on the fabric. If you can't completely wash it, the oxidation of the protein solidified on the fabric will become more and more yellow over time. It may also be because the sweat stains are not clean, and the clothes will turn yellow over time. In addition, white clothes and fabrics will be treated with fluorescent whitening agent when leaving the factory, and the fluorescent whitening agent will be lost. Therefore, clothes, especially white clothes, will feel yellow and old after wearing for a period of time, which is also the reason why white knitwear turns yellow. What if the white sweater turns yellow 84 disinfectant cleaning method The quickest way is to use 84 disinfectant. You can buy it in the supermarket. Dilute the 84 disinfectant according to the instructions of the bottle body and soak it for 10-15 minutes, and the clothes can return to the same state as they just bought. Blue ink cleaning method Prepare a basin of clear water and drop two drops of blue pen water in the water. Don't drop more. After mixing, soak the white clothes for more than ten minutes. When you take them out, you will find that the clothes are very white and new. This method is suitable for clothes of any material. The principle is that yellow and blue are complementary colors, that is, Yellow + blue = white. White vinegar cleaning method Wipe the stain with 15% acetic acid solution (15% tartaric acid solution can also be used), or soak the contaminated part in the solution, and rinse it with clean water the next day. Citric acid solution or oxalic acid cleaning method Wet the contaminated area with 10% citric acid solution or 10% oxalic acid solution, then soak it in concentrated brine, wash and rinse it the next day. How to choose knitwear Mm with small face is suitable for knitwear with high collar, half set of head collar and small stand collar. The collar can be decorated with beads or beaded flowers. Match with this year's popular sweater chain, let the sweater chain with multi-layer overlapping effect decorate your high collar sweater more fashionable, and show your intellectual beauty at the same time; Square face mm can try conjoined small lapel, low neck and round neck sweaters. Such a knitted sweater can be worn with a shirt. Outside the shirt, a set of knitted sweaters will look both lady and lovely; Round faced mm might as well wear dark knitted sweaters with V-neck, small round neck and small straight neck. For example, dark blue, brown and gray black can play the role of modifying vision. Match this winter to in's Pinstripe narrow knit long scarf, simple stripe style can be full of British temperament. Circle dots and flowers are more suitable for Lolita style girls. They are born with an innocent baby face. Only with such a sweater can they shine. Intellectual office workers still focus on pure colors. They can choose those with hidden patterns and stripes at the waist, but keep the neckline as simple and clean as possible. How to maintain knitwear 1. Hand washing and dry cleaning are the best for knitwear. Do not carry out machine washing, chlorine bleaching and hot water cleaning. 2. When washing knitwear, it is best to turn the inner layer of knitwear out and clean. White clothes can be washed at high temperature with alkaline detergent to bleach. 3. Fabric soaking time should not be too long to avoid fabric fading. 4. Before washing the knitwear, the cuffs and hem that are easy to loose should be folded inward to prevent the external force deformation caused by pulling the clothing fiber due to excessive force during cleaning. 5. Knitwear should try to avoid dehydration with a dehydrator, which is most likely to deform the knitwear. If necessary, it should also be limited to 30 seconds to one minute. 5. Do not wring the newly washed knitwear dry by hand. Wrap it with a dry bath towel to absorb excess water. 6. When drying, the clothes should be placed flat until 80% dry, then wrap the sleeves with a net bag, hang them on the bamboo pole and dry them to avoid the sun exposure.