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Social Sciences 19 Online
OpenStudy (anonymous):

4. Tear–free shampoos are advertized as having a pH similar to that of human tears. What pH would you expect tear–free shampoos to be?

OpenStudy (anonymous):

well the pH for human tears is 7.2, so somewhere around that

OpenStudy (anonymous):

tear free is due to the pH value, which is 7, or neutral

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