There are a lot of different types of plastic bottles and jars on the market. Some are inexpensive and great for sample purposes, while others are pricier and better suited to the high-end beauty industry.
Polystyrene (PS) is a transparent thermoplastic with some interesting properties. It can be a solid or a foam and is also biologically inert, non-toxic and light weight.

It's also easy to find PP jars and bottles in all shapes and sizes with most offering a plethora of closure choices including screw caps, liquid and cream dispensing caps, spice shaker caps, flip tops, lotion pumps, fine mist sprayers and orifice reducer plugs.

Choosing the right container can make or break your formulation, so compatibility testing is recommended.