Cosmetic jars come in a variety of shapes and sizes and can be made from glass, plastic, or metal. These jars are used to store lipsticks, lip balms, facial creams, lotions, foundations, and other beauty products. 

Cosmetic jars are designed to protect the product from air, light, and moisture, which can degrade the quality of the product over time. The jar also helps protect the product from contamination. Cosmetic jars often feature a tight-fitting lid with a secure seal to prevent spills and contamination.