Florida Cosmetology Licensing ExamChemical ServicesHard
A client requests a full head of highlights. During the consultation, the cosmetologist notes that the client's hair has been previously colored with a dark, permanent dye. What is the most important safety precaution to take before proceeding with the highlighting service?
- AConduct a strand test to assess the hair's integrity and lightening capability.
- BApply a protective cream to the client's skin around the hairline.
- CPerform a detailed scalp analysis for abrasions.
- DAdvise the client to use a clarifying shampoo before the service.
Show answer & explanationAnswer & explanation
Correct answer: A. Conduct a strand test to assess the hair's integrity and lightening capability.
Highlighting previously colored hair with lightener can lead to unpredictable results, potential damage, or an undesirable color outcome. A strand test is critical to determine how the hair will react to the lightener, its integrity, and how much lift can be safely achieved.
Why the other options are wrong
- B. Protective cream is a standard safety measure for all color services but doesn't address the specific challenge of previously colored hair.
- C. A scalp analysis is always important, but a strand test is paramount for color predictability on previously colored hair.
- D. Clarifying shampoo might help remove product buildup but won't predict how previous permanent dye will react to lightener.
Highlighting Previously Colored Hair
The process of lightening sections of hair that have been previously treated with permanent or demi-permanent hair color, which requires careful assessment due to potential unpredictable results or damage.
- Previous color can interfere with lightening.
- Risk of uneven lift, brassiness, or damage.
- Strand test is essential for predicting outcome.
- May require lower volume developer or gentler lightener.
Memory trick: Strand Test: See Before You Bleach