Hair Breakage 272 To illustrate this point, Figure 14 compares Survival Probability plots for Caucasian hair at 60% RH using three different stress conditions. That is, as the magnitude of the repeating stress declines, there is a higher probability for survival. Therefore, it again becomes possible to model effects relating to the magnitude of the repeating force and fiber dimensions. By means of illustration, Table 6 shows the probability for a 70 μm hair fiber surviving under repeated application of different loads. Meanwhile, Table 7 shows results for a constant 30 g force acting on fibers of different dimensions. Figure 14. Survival Probability plots for Caucasian hair fibers at 60% RH as a function of repeated applied stress