Cosmetic ph product strip test

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How To Check pH Balance of Cosmetic Products

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How to test cosmetics to avoid reactions - Daily Nation

As many remember from the school chemistry course and the soap advertising, the pH level is a scale used to specify the acidity or basicity of an aqueous solution. The very concept of pH appeared about a hundred years ago. From Latin, the pH can be translated in two ways: potentia hydrogeni hydrogen force or pondus hydrogenii hydrogen weight. In any case, the whole story with pH revolves around hydrogen: an alkaline or acidic value determines the concentration level of hydrogen ions in the aqueous solution. For the skin, the pH level is determined based on the hydro-lipid layer. The pH can be measured in two ways: using an electronic device called a pH meter, or using paper indicators test strips - they can be bought at hardware stores and pharmacies.
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It is not only imprtant because obviously the pH of the product should match the physiological pH of the skin but because any changes in pH of the product might have adverse effects on the:. Except for some functional products such as deodorants, hair strengthening products, hair dyes, cuticle removers or chemical peels which have a much higher or much lower pH than the physiological skin pH 4. One exception is the lye soap which by nature has a much higher pH and there is nothing we can do about it. Reducing the pH of the soap causes the hydrolysis degradation of soap. This high pH is the reason why most experts recommend applying surfactant based cleansing products or cleansing oils over facial skin instead of a lye based soap.
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