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Comparison of stratum corneum integrity between smokers and nonsmokers. Stratum corneum integrity on the forearm was assessed by measuring TEWL after each D-Squame application. A total of 6 D-Squames were applied. An unpaired two-tailed Student's t-test was used to determine significant differences between smokers and nonsmokers. The number of subjects in each group is detailed in Table 1.
