Why use deionized water in the production of cosmetics industry?
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Update time : 2022-02-12 09:47:39
This is because the presence of these ions can not only cause the cream lotion to agglomerate, but also cause skin aging, so deionized water must be used in the production of skin care products. In addition, water is the most widely used, cheapest and most abundant raw material in cosmetic production. Water has good solubility and is also an important emollient substance. There is a large amount of water in most cosmetics such as shampoo, bath liquid, various creams and lotions. Water plays an important role in these cosmetics. The quality of cosmetic production water directly affects the cosmetic production process and the quality of the final product. In order to meet the requirements of high stability and good usability of cosmetics, there are two requirements for the production water of cosmetics, including the concentration of inorganic ions and the contamination of microorganisms. 1. Most cosmetics require deionized water to reach the level of general pure water, so that the salt content is reduced to below 1.0mg/L, and the conductivity is reduced to 1～10μs/cm<25°C, or the resistivity is 0.1 Megohm～1MΩ •cm>. Most cosmetics require deionized water to reach the level of ordinary pure water.
2. Another requirement for cosmetic water is to contain no or as little microorganisms as possible. Cosmetics hygiene standards stipulate that the total number of bacteria in general cosmetics should not be greater than 1000/ml or more or less 1000/g; the total number of bacteria in cosmetics for eyes, lips and oral mucosa and cosmetics for infants and children should not exceed 500/g, and Fecal coliforms, Pseudomonas aeruginosa and Staphylococcus aureus were not detected. Microorganisms multiply in cosmetics, resulting in product spoilage, odor, separation and agglomeration of products, and harm to consumers. Any cosmetic product that contains water can grow bacteria, and the most common source of bacteria is probably the water itself, so modern cosmetic factories must use process water [mainly raw material water] that is free from microbial contamination.
