Extremely Cost-Effective: This is its biggest advantage. Round jars are the cheapest type of packaging to manufacture at scale. This low cost is often passed on to the consumer.
Simple and Familiar: The design is intuitive—unscrew the lid and access the product. There is no mechanism to understand or prime.
Wide Compatibility: Excellent for packaging very thick, viscous, or textured products (e.g., body butters, sugar scrubs, clay masks) that would clog a pump or tube.
Easy to Decant and Travel With: Small, lightweight round jars are widely available for DIY travel kits.
Design Flexibility: Available in a vast range of diameters, heights, and colors to suit any brand aesthetic.