In the context of hair coloring, what is a characteristic of nonoxidative color?

Nonoxidative color is a type of hair coloring that is designed to deposit color without undergoing a chemical reaction that alters the hair structure on a permanent basis. One of its defining features is that it does not require an activator, such as a developer or oxidizing agent, to achieve its intended effect. Instead, nonoxidative colors work by coating the hair shaft, which allows for a temporary change in color that will gradually wash out over time.

In contrast to the characteristic of needing heat or causing a permanent change in hair color, nonoxidative colors are more gentle and are often used for temporary hair color effects. They are not suitable for lightening hair, as lightening typically requires an oxidative process to lift the existing color. Thus, the correct answer highlights a fundamental trait of nonoxidative color in the realm of hair care and coloring.