California Cosmetology Written ExamChemical Texture ServicesMedium
Before applying a sodium hydroxide relaxer, a cosmetologist carefully applies a protective base cream along the client's hairline, ears, and scalp perimeter. What is the primary purpose of this step?
- ATo add moisture and shine to the strands
- BTo protect the skin from chemical burns
- CTo neutralize the relaxer before rinsing
- DTo increase the relaxer's processing speed
Show answer & explanationAnswer & explanation
Correct answer: B. To protect the skin from chemical burns
Protective base cream (often petroleum-based) shields the scalp, hairline, and ears from direct contact with the highly alkaline relaxer, preventing chemical burns and irritation.
Why the other options are wrong
- A. Base cream is not applied to the hair strands for moisture.
- C. Neutralizing shampoo, not base cream, stops the chemical action.
- D. Base cream does not accelerate processing; it protects skin.
Protective Base Cream
A petroleum-based cream applied to the scalp, hairline, and ears before hydroxide relaxer application to prevent chemical burns.
- Applied before relaxer, not to hair strands
- Protects sensitive skin areas from caustic pH
- Standard step in relaxer safety protocol under Title 16 practices
Memory trick: 'Base cream = Body armor before the burn'