Cosmetic grade zinc pyrithione, also known as ZPT or zinc pyrithione, is a common ingredient found in a variety of personal care and cosmetic products. It is primarily used for its antifungal and antibacterial properties, making it an effective ingredient in products designed to treat dandruff, seborrheic dermatitis, and other scalp conditions.

Zinc pyrithione works by inhibiting the growth of fungi and bacteria on the skin or scalp. It helps to control the overproduction of skin cells, which is often associated with dandruff and other scalp conditions. Additionally, it has some mild anti-inflammatory properties, which can help soothe irritated skin.

In cosmetic formulations, zinc pyrithione is typically used at concentrations of 0.1% to 2%. It can be found in shampoos, conditioners, scalp treatments, soaps, and various other personal care products. When used as directed, it is generally considered safe for topical use.