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NEWS — acidity

What is the pH level in cosmetics and why you should know it?

elena lezhneva
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. It was introduced by the Danish chemist Søren Peder Laurits Sørensen. From Latin, the pH can be translated in two ways: pot...
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