A plastic loose powder jar is a container made of plastic that is used to hold loose powder, such as face powder or setting powder. These jars typically have a screw-on lid with small holes or a sifter to dispense the powder. They come in various sizes and shapes, and are often used by makeup artists and individuals to store and apply powder products. Plastic loose powder jars are lightweight and durable, making them a popular choice for travel and everyday use.