Florida Cosmetology Licensing ExamHair ServicesMedium
During a hair coloring consultation, a client expresses concern about a metallic build-up on their hair, which they suspect is from well water. What is the most appropriate initial step a cosmetologist should take before proceeding with any chemical service?
- APerform a strand test with the desired hair color.
- BConduct a metallic salt test.
- CProceed with a patch test for allergic reactions.
- DApply a protein treatment to strengthen the hair.
Show answer & explanationAnswer & explanation
Correct answer: B. Conduct a metallic salt test.
Metallic salts in hair can react adversely with chemical solutions, especially perms and colors, leading to unpredictable results, discoloration, or severe damage. A metallic salt test is crucial to identify their presence before any chemical service.
Why the other options are wrong
- A. A strand test is important for color results but should only be done after confirming no metallic salts are present, as metallic salts can skew the results or cause damage.
- C. A patch test (predisposition test) is for allergic reactions to the color product itself, not for identifying metallic build-up, and should be done 24-48 hours before coloring, but after confirming hair is free of metallic salts.
- D. A protein treatment might be beneficial for hair health, but it does not address the immediate danger posed by metallic salts reacting with chemicals.
Metallic Salt Test
A test performed on hair to detect the presence of metallic salts, which can react adversely with chemical services like perms and hair coloring.
- Crucial before chemical services if metallic build-up is suspected.
- Involves immersing a strand of hair in a specific solution (e.g., 1 oz. of 20 volume peroxide + 20 drops of 28% ammonia).
- A positive reaction (heating, bubbling, discoloration) indicates metallic salts.
Memory trick: Before you COLOR, check for METAL to avoid a FOUL up.