AXILLARY ODOR EVALUATION 291 LAB 2 ODOR SCORE 8 SCENTED FORMULAT ]' ONS PLACEBO 0 3 6 24 ACTIVE 0 3 6 24 TIME (HOURS) AFTER APPLICATION Figure 6. Axillary odor scores with scented lotions. Test tube method (BM) vs direct sniffing (Lab 2). The placebo effect in Laboratories 1 and 2 was judged to be almost as great as that obtained with the complete formula. BM and Laboratory #3 scored odor similarly at 3 and 6 hours but the contract labo- ratory again found pre-application odor levels at 24 hours (Figure 7). Figure 8 graph- LAB $ ODOR SCORE SCENTED FORMULAT I ONS PLACEBO -- ACT I VE -- -- -- 0 3 6 24 0 3 6 24 TIWE (HOURS) AFTER APPLICATION Figure 7. Axillary odor scores with scented lotions. Test tube method (BM) vs direct sniffing (Lab 3).

292 JOURNAL OF THE SOCIETY OF COSMETIC CHEMISTS ODOR SCORE 8 SCENTEB FORMULATIONS LAB 1 LAB 2 LAB 3 7 5 4 2 I 3 6 24 0 TIME (HOURS) AFTER APPLICATION 24 Figure 8. Axillary odor scores with scented lotions. Three contract laboratories compared. ically compares the results obtained by direct sniffing in the three contract laboratories. It is evident that there is good agreement at all time intervals for laboratories # 1 and #2. Also evident is the bias in judging apparently related to the fragrance in these lotions. Laboratory #3 was more efficient in discerning malodor when fragrance was present. ANTIPERSPIRANT AEROSOLS In another study, two unscented antiperspirants were compared in a double blind study by the BM group using the tube method and by Laboratory # 1 using direct sniffing. The scores for the two groups were remarkably close at 0, 3, and 6 hours, but not at 24 hours (See Table IV). The BM score for product B at 24 hours does not fit the Table IV Odor Scores With Unscented Antiperspirant Aerosols (Days 1 and 2 Combined Judges Combined) Test Tube Method Direct Sniffing (B-M) (Lab 1) Hours After Product Product Product Product Application A B A B 0 6.47 6.47 6.68 6.74 3 3.11 b 2.84 b 3.67 2.72 a 6 3.12 3.21 3.98 3.53 a 24 4.05 2.96 a 4.62 3.86 a Product B significantly better than Product A. Significant variation among judges at 3 hours no significant differences between products @ .05 level.