Which statement is true about lightening processing time?

The statement that a number of factors interact to affect processing time is accurate because lightening hair is influenced by various elements. These elements include the natural color and condition of the hair, the type of lightener used, the desired level of lift, the porosity of the hair, and the environmental conditions such as heat and humidity. Each of these factors plays a significant role in determining how long a lightening product will need to be applied to achieve the desired results.

For instance, hair that is more porous may process faster because it can absorb the lightening agents more readily than hair that is less porous. Similarly, different hair colors may respond differently to the same product; for example, darker hair generally needs a longer processing time to achieve a lighter shade. Understanding these interactions allows a stylist to make informed decisions about timing during a lightening service, ensuring better outcomes for the client.