Hair Ethnicity 218 Figure 14 Influence of curl type on ellipticity values mean ± confidence intervals at 95% curl types with the same letter designation are statistically the same results are from 428 subjects and 21,400 fibers. Figure 13 Cross-sectional area of hair as a function of curl type mean ± confidence intervals at 95% curl types with the same letter designation are statistically the same results are from 428 subjects and 21,400 fibers.