Rusk Universal Shine Enhancing 20V Cream Developer in the 33.8 fl.oz size is a hair coloring product designed to achieve vibrant and long-lasting hair color results. This cream developer works alongside hair color or lightening products to activate color molecules and ensure even distribution for consistent results.

The "20V" in the product name indicates the volume of peroxide in the developer. In this case, 20V signifies a moderate volume developer, commonly used for lifting natural hair color by one or two shades or for gray coverage.