California Cosmetology Written ExamClient Consultation and AnalysisMedium
A cosmetologist notices that a new client's hair strands feel thick and have the largest visible diameter compared to other hair types. When performing a chemical service, this texture typically requires which adjustment?
- AA lower volume of peroxide to prevent overprocessing
- BNo adjustment, since all hair textures process identically
- CShorter processing time because the cuticle is thin and porous
- DLonger processing time because the cuticle layer is thicker and more resistant
Show answer & explanationAnswer & explanation
Correct answer: D. Longer processing time because the cuticle layer is thicker and more resistant
Coarse hair has the largest diameter and the most compact, resistant cuticle layer, so it typically requires a longer processing time for chemical services such as color or relaxers to fully penetrate.
Why the other options are wrong
- A. Peroxide volume is chosen based on desired lift/porosity, not texture alone.
- B. Texture significantly affects processing; treating all hair the same risks under- or over-processing.
- C. Fine hair, not coarse hair, has a thinner cuticle and processes faster.
Coarse Hair Texture
Coarse hair has the largest diameter of the three texture types and a thick, resistant cuticle layer that requires more time and product to process.
- Largest diameter among fine, medium, coarse
- Most resistant to chemical penetration
- Requires longer processing time
Memory trick: Coarse = Cable — thick and takes time to bend.