What should be done before applying any chemical service?

• A. Analyze The Hair And Scalp For Damage Or Contraindications
• B. Pre-Wash With Clarifying Shampoo
• C. Apply A Protective Barrier
• D. Section The Hair

Answer: (A)

Before applying any chemical service, you must analyze the hair and scalp for damage or contraindications. This assessment helps you spot issues like scalp irritation, dermatitis, cuts, or conditions that could be worsened by chemicals, as well as any previous chemical processing or medical concerns that could change how you proceed. The goal is to determine whether the service is safe, if adjustments are needed (such as different product strength, timing, or a patch test), and how to protect the client’s hair and scalp throughout the process.

After this analysis, you can take appropriate preparatory steps. A protective barrier around the hairline is used to shield the skin during application, and sectioning the hair helps ensure even coverage during the service. Cleansing with a clarifying shampoo might be done if buildup could affect results, but it follows the safety assessment.