a a TV advertisement of a shampoo says that the shampoo is the best because it has a very low pH write if it will be as good for the hair as it says
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according to the ph rule is the solution is less than 7 pH then it is a acid and if it is greater than 7 it is basic or alkaline a solution which are 7 pH are neutral substances spare water has a pH very close to 7
if the TV app advertisement says that it has less pH then it is wrong it is a acid and it can harm our hair
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