What volume of developer is typically used to achieve the least lift with permanent color?

In the context of achieving the least lift with permanent color, the typical choice is to use 10 volume developer. This is because 10 volume developer contains a lower concentration of hydrogen peroxide, which results in minimal lift and is primarily used for deposit-only hair coloring. It is suitable for darkening hair or adding subtle color changes without significantly altering the original color.

While 20 volume developer can offer some lift (approximately 1-2 levels) and is often used for gray coverage or to lighten hair slightly, it is not the best option for minimizing lift. Higher volumes, such as 30 and 40, are designed to provide greater lifting power, making them not suitable for achieving the least lift with permanent color. Therefore, selecting the appropriate volume of developer is crucial for achieving the desired results in hair coloring.