Which of the following describes nonoxidation color products?

Nonoxidation color products are defined by their formulation, which typically includes no ammonia. This absence of ammonia means that these products do not alter the hair's internal structure or create a permanent change in color. Instead, they coat the hair shaft, providing a temporary color effect that can last through several washes.

The fact that nonoxidation color products do not require a developer to activate is a critical distinction that sets them apart from oxidation color products. Since they do not involve a chemical reaction that breaks down the cuticle or changes the hair's chemical structure, they are gentler on the hair and suitable for individuals looking for a less invasive coloring option.

Additionally, nonoxidation color products do not possess the capability to lighten hair. Because they simply deposit color rather than lift it, they are limited in their ability to alter the hair's natural pigment. Lastly, these products do not provide a permanent change to hair color, as they will gradually wash out over time.