Pyrithione zinc is a chemical compound commonly used in various personal care products, particularly in anti-dandruff shampoos and skin treatments. It has antifungal and antibacterial properties, making it effective in reducing the growth of fungi and bacteria that can cause scalp and skin issues. This ingredient works by inhibiting the activity of Malassezia, a type of yeast linked to dandruff and seborrheic dermatitis. Pyrithione zinc is generally considered safe for topical use, but it is important to follow product instructions to avoid potential skin irritation.