D i 6.5 5.5 4.5 number of strips removed Fiõure 5. pH values ooe the soap-washed skin suroeace aoeter stripping. Table VII Changes in Cheek Skin Roughness (Rz values) After Five Days Use of Various Soaps (normalized values) Treated Treated Treated Treated R z Values Control* With D Control* With A Control* With B Control* With C Beginning of n 139 153 117 113 133 144 129 136 Test Period • 99.57 99.57 99.57 99.57 99.57 99.57 99.57 99.57 (Mondays) s 28.48 29.96 21.29 23.28 26.04 26.93 24.26 27.06 (= Oh) End of n 125 125 113 117 148 113 129 117 Test Period • 99.57 95.44 99.57 93.65 99.57 105.37 99.57 96.07 (Fridays) s 25.34 30.07 22.86 26.57 26.13 27.08 28.06 26.63 (= lh) * (Untreated) control = skin site, contralateral to treated (= 1 h) or to be treated (= 0 h) skin site. n = Number of measurements. Comparison o• the Products/Code lh A B C D DF 240 236 240 ?: 0.489 2.666 0.172 A DF 228 232 e 3.313 0.696 B DF 228 • 2.626

CLEANSING BAR EVALUATION 321 Table VII--Continued Thresholds of significance,' DF = 300 t Value 95% 1.970 99% 2. 596 99.9% 3.33O Changes in Forearm Skin Roughness (Rz values) After Five Days Use of Various Soaps (normalized values) Treated Treated Treated Treated Rz Values Control* With D Control* With A Control* With B Control* With C Beginning of n 319 317 297 293 310 307 309 310 Test Period • 89.05 89.05 89.05 89.05 89.05 89.05 89.05 89.05 (Mondays) s 15.80 17.74 17.80 18.98 17.37 16.86 19.34 22.91 (= Oh) End of n 309 306 272 286 311 309 283 296 Test Period • 89.05 85.09 89.05 85.08 89.05 87.78 89.05 89.52 (Fridays) s 18.92 18.77 18.59 18.47 16.65 17.90 20.53 19.20 (= lh) * (Untreated) control = skin site, contralateral to treated (= 1 h) or to be treated = 0 h) skin site. Comparison Before Comparison And After Product Comparison of the Untreated/Treated Application Products/Code lh DF f• Oh/1 h DF t lh A Control/D 613 2.605 D 621 2.707 D DF 590 Control/A 556 2.530 A 577 2.550 t 0.007 Control/B 618 0. 526 B 614 0.521 DF A Control/C 577 0.285 C 604 0.273 t DF B 613 3.171 593 3.151 600 2.863 580 2.842 603 0. 172 Thresholds of significance: DF = 600 t Value 95% 1.964 99% 2.585 99.9% 3.308