Water Diffusion Characteristics of Human Stratum Corneum at Different Anatomical Sites In Vivo  Doris A. Schwindt, Klaus P. Wilhelm, Howard I. Maibach  Journal of Investigative Dermatology  Volume 111, Issue 3, Pages 385-389 (September 1998) DOI: 10.1046/j.1523-1747.1998.00321.x Copyright © 1998 The Society for Investigative Dermatology, Inc Terms and Conditions

Figure 1 Weighted linear regression analyses (through the origin) for cumulative mass of stripped SC as a function of tape strip number i (error bars: ±σ). Symbols represent the measurements, and lines represent the regression results. The derived regression functions (slope ± SD) and correlation coefficients for abdomen and forearm of a single volunteer are given. Thus, for a given volunteer and anatomical site each tape strip removed approximately the same mass of SC. Journal of Investigative Dermatology 1998 111, 385-389DOI: (10.1046/j.1523-1747.1998.00321.x) Copyright © 1998 The Society for Investigative Dermatology, Inc Terms and Conditions

Figure 2 Linear regression analyses of 1000/TEWL versus thickness of stripped SC x for the abdomen (a) and volar forearm (b). Symbols represent the measurements, and lines represent the regression results. The linearity confirms that human SC may be regarded as a Fickian membrane for water diffusion. Journal of Investigative Dermatology 1998 111, 385-389DOI: (10.1046/j.1523-1747.1998.00321.x) Copyright © 1998 The Society for Investigative Dermatology, Inc Terms and Conditions

Figure 3 Regional variations of SC thickness H for six volunteers. Journal of Investigative Dermatology 1998 111, 385-389DOI: (10.1046/j.1523-1747.1998.00321.x) Copyright © 1998 The Society for Investigative Dermatology, Inc Terms and Conditions