Ideal for Thick, Rich Textures: Jars are perfectly suited for dense, viscous formulas like night creams, moisturizers, balms, and butters that would be difficult or impossible to dispense through a pump or tube.
No Mechanical Stress: The formula doesn't need to be pushed through a narrow valve or pump mechanism, which is beneficial for formulas with high concentrations of particulates (e.g., some exfoliants) or certain thickeners.
Compatibility with Sensitive Ingredients: While a drawback for preservation (see below), the lack of a complex dispensing mechanism means the formula doesn't come into contact with metal springs or plastic valves that could interact with certain active ingredients.