The sequence of applying perm solution, rinsing perm solution, and applying neutralizer describes which phase?

• A. Chemical Phase
• B. Mechanical Phase
• C. Finishing Phase
• D. Rinse Phase

Answer: (A)

The main idea here is chemical processing. The perm solution chemically opens the hair’s disulfide bonds, allowing the hair to take on a new shape. Rinsing removes that chemical so the hair can stop processing, and then the neutralizer chemically rebuilds the bonds in the new arrangement. All of these steps are about changing the hair’s chemistry, which is what the Chemical Phase encompasses. Finishing involves styling after processing, and Mechanical Phase is about the physical wrapping or manipulation—not the chemical changes themselves. That’s why this sequence fits the Chemical Phase.