Hair Ethnicity 216 Figure 11 Influence of ethnicity on ellipticity values mean ± confidence intervals at 95% ethnic groups with the same letter designation are statistically the same results are from 428 subjects and 21,400 fibers. Figure 12 Break stress of hair according to 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.