PSI Cosmetology Practice Exam

All of the following are determined by a strand test in a color service EXCEPT?

1. How much color to use for service

2. Expected end result

3. Processing time

4. Color absorption level

The correct answer is: How much color to use for service

In a color service, a strand test is crucial for determining several important factors related to the hair coloring process. It helps assess how the hair will react to the color applied, and the results of this test inform the stylist about the expected end result, processing time, and color absorption level. The expected end result reflects how the color will appear after application, taking into account the hair's current condition and existing color. Processing time is also determined by how the hair interacts with the dye during the test, which can significantly influence when the color reaches the desired level of development. Additionally, the color absorption level is key in understanding how well the hair will take to the color, which can vary based on hair type and previous treatments. However, how much color to use for the service is not typically assessed through a strand test. The overall quantity needed is usually determined based on the hair’s length, thickness, and density rather than the results of a strand test. Therefore, it's more about the general application logistics than about the specific outcome of the hair coloring process that a strand test addresses.