You get what you pay for and "does what it says on the tin"
Zinc Pyrithione is the best compound for dandruff control. It used to be in more famous shampoos like H&S but they took it out presumably to cut costs. Everytime a manufacturer comes up with a new formula they have taken something out!
This shampoo has it in at a higher percentage so a small amount is effective. So even though it is expensive, it is good value for money.
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