zinc pyrithione

noun

zinc pyr·​i·​thi·​one -ˌpir-i-ˈthī-ˌōn 

: an antibacterial and antifungal compound C₁₀H₈N₂O₂S₂Zn that is nearly insoluble in water, possesses cytostatic activity against epidermal cells, and is the active ingredient in various shampoos used to control dandruff and seborrheic dermatitis

called also pyrithione zinc