What is the purpose of performing a strand test before a color change?

• A. To see how the hair responds to lift and color on a small section.
• B. To test the client's patience.
• C. To determine scalp temperature.
• D. To test fragrance.

Answer: (A)

Strand testing is about previewing how the hair will react to the color chemicals on a small sample before doing the full application. It lets you see how much lift the hair can achieve and how the color deposits, so you can predict the final shade, adjust processing time, and catch any issues like uneven lift or potential damage early. This careful foretaste helps you apply the product more safely and consistently across the whole head. It’s not about patience, fragrance, or scalp temperature, which aren’t determined by this test.