250 JOURNAL OF THE SOCIETY OF COSMETIC CHEMISTS 200 ! 100 50 150 Fiõure 4. (•) intrinsic (DO and (o) mean (•) dioefusion ½oeoeficient of •o|uene vapor in stratum comeurn :'i% (female, •ge 20) as a [un•don of½oncen•raoe1on, 25ø½ :•':•i•!i71•:
THE STRATUM CORNEUM 251 4O 10 I , , I I 2• 40 60 80 10 5 Uptake (%) Figure 5. (tn) intrinsic (D,) and (o) mean (•) diffusion coefficient of water vapor in stratum corneum (female, age 20) as a function of concentration at 32øC
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