Heavy Cigarette Smokers in a Chinese Population Display a Compromised Permeability Barrier

Figure 3

Comparison of epidermal biophysical properties between smokers and nonsmokers. (a) and (b) depict skin surface pH and stratum corneum hydration, respectively, while (c) and (d) display the melanin and erythema index, respectively. The number of subjects in each group is detailed in Table 1. One-way ANOVA Kruskal-Wallis test was used to determine significant differences between smokers and nonsmokers, and the significances are indicated in the figures.

(a)

(b)

(c)

(d)