Common problem
Acidity regulator, also known as pH regulator, is used to maintain or change the pH of food. When the hair is sour, the alkali added is the acidity regulator. It is mainly used to control acidifier, alkali agent and buffer salt. Each acidity regulator has different characteristics of mild acidity and acidity. Gb2760-2011 specifies the use range and dosage of each acidity regulator.
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