What are the four volume options available in hair coloring?

The four volume options available in hair coloring are indeed 10, 20, 30, and 40 volume. These volumes refer to the strength of the developer used in conjunction with hair color and indicate the level of lift or lightening that can be achieved during the coloring process.

A 10 volume developer is typically used for deposit-only color and is gentle on the hair, providing a subtle change. A 20 volume developer is commonly used for standard color applications as it lifts hair about one or two levels, making it suitable for gray coverage. A 30 volume developer is more potent, allowing for approximately three levels of lift, which is beneficial for achieving a more dramatic change in color. Finally, a 40 volume developer provides the maximum lift and is typically used when a high degree of lightening is necessary, such as during bleaching processes.

These options are essential for professional barbers and stylists to understand as they significantly impact the final outcome of hair color treatments, including the degree of lightening or deposit that will occur based on the desired results.