NEWS
Bleach can dissolve hair. There are several steps to use it correctly.
In daily life, when washing white or light-colored clothes, some people like to soak the clothes in bleach for a period of time before washing. This can not only easily remove soy sauce stains, oil stains, etc., but also prevent the clothes from turning yellow.However, such powerful bleach has raised concerns about its safety.Recently, a piece of news that bleach can quickly dissolve hair in 15 minutes caused quite a stir on the Internet.Some netizens raised questions, even hair can be corroded. What will happen if it comes into contact with skin?So, does bleach contain substances that are harmful to humans?Why can hair be dissolved and what issues should be paid attention to when using this type of product?It is no coincidence that bleach is indeed highly corrosive. Regarding the corrosiveness of bleach, the Chongqing Fuling District Consumer Rights Protection Committee and the Fuling District Industrial and Commercial Branch Litchi Industrial and Commercial Institute also conducted experiments.The staff poured a certain amount of bleach solution into a transparent glass, and then added 10 strands of hair.The original solution of bleach is light yellow in color and has a pungent smell.After 5 minutes, some white substance appeared around the hair, and at the same time, the hair began to break.After 10 minutes, part of the hair appeared "transparent".After 27 minutes, all the hair in the cup disappeared.Experimental results show that bleach is indeed very corrosive.If you use diluted bleach, your hair will disappear completely after 40 minutes.When the same experiment was carried out with colored clothes bleaching liquid, the hair inside did not change at all.Qiu Bin, a professor at the School of Chemistry at Fuzhou University, said that the main component of bleach is sodium hypochlorite, which is highly corrosive.The main component of hair is protein, which will dissolve under the action of high concentrations of sodium hypochlorite.In other words, sodium hypochlorite reacts chemically to form hypochlorous acid when it comes into contact with water and carbon dioxide.The main component of human hair is macromolecular protein, and protein is a long-chain polymer compound. It will be broken into smaller molecular chains by the strong oxidation of hypochlorous acid. The small molecular chains contain hydrophilic amino groups, carboxyl groups, etc. groups, therefore, the hair can dissolve in the liquid and eventually disappear.Dilute according to the instructions before use. The Chongqing Fuling District Consumer Committee recommends that consumers should use bleaching liquid with caution.If you really need to use it, you should strictly follow the usage instructions indicated in the product instructions.For example, when consumers buy bleaching liquid for sterilization, it is usually 2 liters of water plus 80 grams of bleaching liquid, and it should be used before laundry; if the consumer buys it back to remove stubborn stains, it is usually 2 liters of water. Add 40 grams of bleaching liquid; if you buy it and only use it for daily bleaching, add 10 grams of bleaching liquid to 2 liters of water.Qiu Bin also said that if the bleaching liquid comes into contact with the skin for a long time, the skin may become rough, but consumers do not need to worry too much.However, when using these bleaching solutions, be sure to dilute them according to their instructions before use. Do not come into direct contact with the original solution. It is best to wear gloves when using them.After bleaching, clothes should be rinsed multiple times to prevent hypochlorous acid residue from affecting human skin.Liao Linhai, the attending physician at Shuguang Hospital (Western Hospital) affiliated to Shanghai University of Traditional Chinese Medicine, reminded that bleach contains a large amount of strong oxidizing substances. If it is commonly used to wash clothes, the large amount of strong oxidizing substances contained in it will be withered for a long time.
