The Effects of Zinc Pyrithione on Dandruff and Itch

January 1978 in “ Yukagaku ”

Y. Watanabe

zinc pyrithione dandruff itching hair rinse shampoo Head & Shoulders

TLDR Zinc pyrithione in shampoo or rinse reduces dandruff and itching.

A clinical study from 1978 investigated the effects of zinc pyrithione on dandruff and itching. It was found that using a zinc pyrithione-containing hair rinse significantly reduced both dandruff and itching. The effectiveness of the treatment increased with the amount of zinc pyrithione that remained on the hair. Notably, a shampoo with 1% zinc pyrithione had similar effects to a hair rinse with 0.3%, which was attributed to the residual amount of the agent on the hair.

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