California Cosmetology Written ExamClient Consultation and AnalysisMedium
During a consultation, a client's wet hair strand stretches significantly and returns to its original length without breaking. What does this indicate about the hair's elasticity?
- AThe hair has excessive porosity and will not hold a curl
- BThe hair has good elasticity, indicating healthy protein bonds
- CThe hair has low density and requires volumizing products
- DThe hair has poor elasticity and is chemically damaged
Show answer & explanationAnswer & explanation
Correct answer: B. The hair has good elasticity, indicating healthy protein bonds
Healthy hair with good elasticity can stretch up to 50% when wet and return to its original length without breaking, reflecting strong internal protein (disulfide) bonds. Poor elasticity hair breaks easily or fails to return to shape.
Why the other options are wrong
- A. Elasticity and porosity are separate properties; this scenario doesn't test porosity.
- C. Density refers to hair count, unrelated to the stretch test.
- D. Poor elasticity would cause breakage, not a smooth stretch-and-return.
Hair Elasticity
The hair's ability to stretch and return to its original length without breaking, indicating the strength of internal protein bonds.
- Wet healthy hair stretches up to 50% of its length
- Dry healthy hair stretches about 20%
- Poor elasticity signals over-processing or damage
- Tested by gently pulling a single wet strand
Memory trick: Elasticity = a rubber band snapping back healthy.