California Cosmetology Written ExamHairstylingHard
A client's hair was recently lightened and is highly porous. Before using a curling iron to style the hair, what should the technician do?
- AUse the highest available heat setting to ensure the curl lasts longer
- BSelect a lower heat setting, apply a heat protectant, and test a strand first, since porous, damaged hair is more vulnerable to heat damage
- CUse the same heat setting recommended for coarse, healthy, unprocessed hair
- DApply the iron directly without any protectant since damaged hair absorbs heat better and holds curls more easily
Show answer & explanationAnswer & explanation
Correct answer: B. Select a lower heat setting, apply a heat protectant, and test a strand first, since porous, damaged hair is more vulnerable to heat damage
Lightened, porous hair has a compromised cuticle and reduced structural integrity, making it more susceptible to heat damage and breakage; a lower iron temperature, heat protectant, and strand test help prevent further damage.
Why the other options are wrong
- A. High heat on already-damaged, porous hair increases the risk of breakage and further damage.
- C. Coarse, healthy hair requires higher heat than damaged, porous hair, so the same setting is inappropriate.
- D. Porous hair does not tolerate heat better; it is more prone to damage without protection.
Heat Styling on Damaged/Porous Hair
Chemically treated or highly porous hair has a weakened cuticle and requires lower thermal styling temperatures with protective products to avoid further damage.
- Porous, damaged hair absorbs heat faster and is more prone to breakage
- Always use heat protectant and perform a strand test on compromised hair
- Lower iron temperatures (around 300°F or less) are recommended for fine, fragile, or chemically treated hair
Memory trick: 'Porous hair, pump the heat lower.'