On the other side of the coin, glass costs more to ship. It weighs more than plastic and breaks more easily. Additionally, glass jars usually use metal lids, which are more expensive than plastic lids.
Now let's talk about plastic containers: There are thousands of choices for plastic bottles and jars. Many industries use them for many different applications. For instance, health and beauty companies use plastic bottles for shampoo/conditioner, lotions, creams and liquid hand soaps. Plastic is great for these products because if you happen to drop them with your wet hands they do not break and there is no danger of getting cut by broken glass. They are also less likely to break in shipping compared to glass containers. Milk, dairy and juice companies also put their products in plastic containers. Industrial and cleaning supply companies put their products mostly in plastic containers as well. Almost all plastic bottles and jars are outfitted with plastic closures because plastic caps are less expensive than metal caps.
At the end of the day, you can use either glass or plastic for most products, such as Glass Lotion Bottle, Glass Dropper Bottle, Glass Pump Bottle, Glass Cream Jar, Boston Round Glass Bottle, Glass Foundation Bottle, Roll On Bottle, Airless Pump Bottle, Airless Syringe Bottle, Cream Container, etc.