NIC Barber Written (Theory) ExamHair Care ServicesEasy
A barber is performing a hair coloring service. To ensure the client does not have an allergic reaction to the hair color product, what mandatory safety procedure must be performed 24-48 hours prior to the service?
- AA patch test
- BAn elasticity test
- CA porosity test
- DA strand test
Show answer & explanationAnswer & explanation
Correct answer: A. A patch test
A patch test (also known as a predisposition or allergy test) is a mandatory safety procedure performed 24-48 hours before a hair coloring service to check for potential allergic reactions. This prevents severe reactions during the actual service.
Why the other options are wrong
- B. An elasticity test determines the hair's strength and ability to stretch, not allergic reactions.
- C. A porosity test assesses the hair's ability to absorb moisture, not allergic reactions.
- D. A strand test determines processing time and color results, not allergic reactions.
Patch Test (Hair Color)
A mandatory safety procedure performed 24-48 hours before a hair coloring service to identify potential allergic reactions to the product.
- Also called a predisposition or allergy test.
- Required by law and product manufacturers.
- Involves applying a small amount of product to a discreet skin area.
Memory trick: Allergy? Patch it 24 hours before!