JOURNAL OF COSMETIC SCIENCE 256 steady-state fl ux response at t = 0 of acclimatization after pre-equilibrating in the cooler environment. Further, after 30 min acclimatization, both subjects saw a rise in average fl ux density (+3.1–3.5 gm−2 h−1), and the average number of fl ux maxima increased to 2.5 for Subject 2, yet only advanced to 1.3 for Subject 1. Similar trends are seen at the 60-min mark. The discernible increase in fl ux for Subject 2, which is refl ected in the large re- ported standard deviation, was caused by a spike in the eccrine fl ux as the trial approached the 80 s mark (i.e., the experiment timed-out). Hence, due to sporadic sudorifi c activity, some of the fl ux density readings were not evaluated at steady state. Pre-equilibration in a warm environment introduced similar, but more exaggerated, increases in fl ux density. In addition, both Subjects 1 and 2 showed increases in the number of fl ux density Figure 5. Average fl ux density vs. time profi les during acclimatization after 15 min pre-exposure to the 6.3°C environment (n = 3). SSWL and fl ux density were recorded at (A) t = 0 min, (B) t = 30 min, and (C) t = 60 min of acclimatization. The inset shows the determination of SSWL and TEWL from fl ux density vs. time profi les.

Table III Evaporimetry Results from Acclimatization after Preconditioning Subjects in Cool (6.3°C) and Warm (24.1°C) Environments Subject AVG (=3) pre-equilibration Key data AVG (=3) equilibration time (30.5° 15 min exposure t = 0 min, n = 3 t 60 min, n = 3 1 2 3 1 2 3 1 6.3° RH AVG no. of Maxima 1.0 1.0 1.0 1.3 1.3 1.3 SSWL (gm −2 ) 0.07 ± 0.01 0.05 ± 0.01 0.05 ± 0.01 0.09 ± 0.04 0.06 ± 0.01 0.05 ± 0.01 Flux density (gm−2h)−1 14.5 ± 3.7 11.6 ± 1.7 10.7 ± 0.7 20.1 ± 2.0 15.0 ± 1.3 16.1 ± 0.8 24.1° 28% RH AVG no. of maxima 2.0 1.7 1.3 3.3 2.3 2.3 SSWL (gm−)2 0.15 ± 0.06 0.07 ± 0.02 0.06 ± 0.01 0.31 ± 0.25 0.11 ± 0.05 0.07 ± 0.02 Flux Density (gm−2h)−1 20.6 ± 2.1 15.4 ± 1.0 16.0 ± 2.4 32.5 ± 11.6 17.5 ± 4.6 29.0 ± 20.7 2 6.3° RH AVG no. of maxima 1.0 1.0 1.0 1.0 2.5 2.5 SSWL (gm−)2 0.25 ± 0.17 0.15 ± 0.10 0.09 ± 0.02 0.33 ± 0.11 0.17 ± 0.11 0.16 ± 0.07 Flux density (gm−2h−)1 10.7 ± 4.4 9.2 ± 1.4 9.0 ± 0.9 13.2 ± 1.1 25.1 ± 19.0 18.9 ± 5.5 24.1° 28% RH AVG no. of maxima 1.5 1.5 1.5 4.0 2.3 2.3 SSWL (gm −2 ) 0.27 ± 0.20 0.11 ± 0.06 0.09 ± 0.01 0.55 ± 0.11 0.27 ± 0.16 0.11 ± 0.08 Flux density (gm−2h−)1 12.5 ± 1.2 13.1 ± 0.3 13.2 ± 0.2 40.0 ± 20.2 27.7 ± 23.0 29.6 ± 20 ENVIRONMENTAL PARAMETERS ON SWEAT GLAND ACTIVITY 257