How it works: Pyrrithione zinc or zinc pyrithione works by treating a species of yeast known as Malassezia. This yeast is thought to play a role in the formation of dandruff/seborrheic dermatitis by causeing irritation to the scalp

resulting in redness, itch, and scaling.

Effectiveness: Studies have shown pyrithione zinc to improve dandruff up to 67%. In addition, studies have shown that patients with dandruff have altered organization of the skin cells on the scalp, and that the use of pyrithione zinc helps to corrent these abnormalities.

Where to find it: Pyrithione zinc can be found in many products including those from DCL, Head and Shoulders, and others

Shop for products containing pyrithone zinc