A 'pH-balanced' shampoo is formulated to a pH of approximately:
a.7.0 (neutral)
b.6.0 to 6.5
c.4.5 to 5.5
d.8.0 to 9.0
Explanation
pH-balanced shampoos are formulated to roughly match the natural pH of hair and skin (about 4.5 to 5.5). This helps the cuticle lie flat and reduces dryness and irritation.
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