What's the difference between soap and soap in composition?

"The history of using soap can be traced back to Italy before BC" and "The Romans started the initial soap production as early as the 2nd century AD" are the same thing. Soap is no different from soap, except that some spices are added to the former.

In addition, the fat component used in the former is better. In the words of my high school chemistry teacher, "it is white lard". Generally, the soap used for washing clothes is cheap vegetable oil and looks yellow. But now some handmade soaps are advertised as "high-grade and expensive vegetable oil". I don't know anything else, but coconut oil is really an extremely cheap chemical raw material.

Whitening ingredients: 1, exfoliating, papain, etc. 2. Inhibit tyrosinase activity, such as vc and mulberry bark. Basically don't count on the latter, just wash it and wash it away, not at all. There used to be a whitening soap, which was said to have added Australian pigeon protein, but it was actually pigeon excrement white, which was called "Shuhuashui" in Chinese medicine. In addition, chicken excrement white and eagle excrement white also have effects, which are essentially exfoliating things.

Ingredients: chamomile, Scutellaria baicalensis Georgi and myrrh.

Antibacterial and anti-inflammatory: boric acid, sulfur. Many time-honored medicinal soaps have these two kinds. It can remove dandruff and inhibit skin itching. There is a brand of soap that claims to have added "Dibaofu", but I quote you a message:

However, an expert group of the US Food and Drug Administration (FDA) recently pointed out: "There is no evidence that household antibacterial soap can prevent bacterial infection more effectively than ordinary soap."

Although the report of FDA experts did not explicitly point the finger at Shu Fujia, it was pushed to the forefront as a well-known antibacterial soap.

FDA experts found that there is no clear medical report that an antibacterial product can reduce the possibility of bacterial infection. The Committee was told that "there is not enough evidence to show that antibacterial soap is more effective than ordinary soap". Allison Arrow, an assistant professor of epidemiology at the University of Michigan, quoted relevant reports from the United States and Pakistan as saying: "Both antibacterial soap and ordinary soap can reduce the possibility of infection, but we can't say which one is more effective than which one." Experts suggest that families should use less or even try not to use antibacterial cleaners including antibacterial soap.

"How to use antibacterial products correctly has always been controversial in academic circles in China." Professor Yuan Qia, a researcher at China Center for Disease Control and Prevention, said recently that there are two views among medical experts on antibacterial soap and other products used in daily life: one is to advocate the long-term correct use of antibacterial soap and other sanitary products, and the other is that frequent contact with low-dose antibacterial drugs will easily make some bacteria resistant to antibacterial drugs, which is not conducive to disease prevention and treatment.

Yuan Qia also pointed out that it is certain that products containing antibacterial agents can only inhibit the growth and reproduction of bacteria, but can not completely kill bacteria or viruses. "Antibacterial" does not mean "sterilization".

Yuan Qia emphasized that people who are exposed to low-dose antibacterial agents when washing their hands with antibacterial soap are prone to produce drug-resistant strains for a long time, and sometimes even grow and reproduce, which is harmful to human health. Washing hands frequently in daily life, whether using antibacterial soap or not, can also reduce the chance of mouth-to-mouth disease. "As long as you use ordinary fat (fragrant) soap and wash it with running water, you can wash off 80% to 90% of the bacteria on your skin. In order to protect the health of your family, it doesn't matter whether you use antibacterial soap or not. "