Is the soap alkaline? Life science knowledge
As people's pursuit of healthy living continues to improve, the attributes of various cleaning products have become the focus of attention. Especially for soaps and soaps, which are often used in cleaning products, people want to know if soap is alkaline. Because human skin is weakly acidic, alkaline soaps can cause some damage to the skin of the hands.
Want to know if the soap is alkaline? There is a very simple way to test it. Use soapy water to test with PH test paper. You can quickly know if the soap you are using is acidic or alkaline. Generally look at the acidity and alkalinity of soap, and also through their ingredients.
Want to know if soap is alkaline? It can be analyzed from its chemical composition: soap is also called high-grade fatty acid soap, and its scientific name is carboxylate. Carboxylates are generally prepared by saponification of oils and fats under heat. It is an anionic surfactant. Since the oil used differs depending on the base used, it is possible to prepare a soap having a very different nature.
As one of the most common and widely used personal washing products, soap has its own advantages and disadvantages. Some of the main components of soaps are sodium fatty acids, which are essentially saponified from oils (vegetable or animal oils). In fact, fatty acids and their derivatives are the most widely used ingredients in cosmetics. However, since sodium fatty acid has a certain basicity (high pH value), and the skin surface is weakly acidic (having affinity with plant alkalis, such as alkali contained in artemisia plants, low pH), high acid-base strength is used. After washing the soap, the pH of the skin surface is greatly increased, causing certain irritation to the highly allergic skin and causing various discomforts. The strong acid and alkali will also wash away the lipid layer on the skin surface and make the skin dry. .
Therefore, it is best not to use long-term contact with soap in daily life, and scientific and rational use of soap is the most important.
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