ANSWERS: 4
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Perhaps it can say in the company's website. Try it out to see if that works.
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You could try using a pool pH tester to test it and see what acidity it is.
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It should be between 6.75 and 7.25, otherwise your hair would fall out.
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I would think it would say on the bottle. I know I've seen some in the stores that say "PH Balanced for such-and-such Hair" on the bottle.
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