570 JOURNAL OF THE SOCIETY OF COSMETIC CHEMISTS PERSPIRATION ß MALODQR' • o NEUTRAL OR INCUBATED 8 HRS PLEASANT ODORS MEDICATED SDAP ß 0003 ß ß 0 0 i, , , I I f I ,I I I I I oo 0 51 NON-MEDICATED SOAP 0 ß • ß ß •• ß 0•00(::) I I I I I I i )o lOOO o 000 2000 KOVATS INDEX IN CARBOWAX 20M Figure 9. Comparison of odorograms of incubated perspiration vapors of two perspiration vapor samples are compared. One sample is pooled from ax'llae washed with a nonmedicated soap (Ivory). The other is from the opposite axillae washed with a medicated formulation. Fresh samples showed little difference, but after incubation a marked difference devel- oped in the number of malodorous constituents. CONCLUSION Recent advances in the odor measurement technology, adapted to evaluate various human body odors, permit the comparison of the efilcacies of cos- metic treatments in reducing or modifying the objectionability of such odors. REFERENCES (1) Manual on Sensory Testing Methods, ASTM Special Technical Publication 434, American Society Testing Materials, Philadelphia, Penn., 1968. (2) A. Dravnieks, B. K. Krotoszynski, W. E. Lieb, and E. Jungermann, Influence of an antibacterial soap on various effluents from axillae, J. Soc. Cosmet. Chem., 19, 611 (1968). (3) A. Dravnieks, B. K. Krotoszynski, R. E. Casely, and D. TabeL Cas-ehromatographie evaluation of intensity of axillary odors, TGA Cosmet. ]., 1, 14 (19•69). (4) I. H. Distelheim, and A. Dravnieks, A method for separating characteristics of disease processes, ]. Int. Derma,tol., 19,, 241 (1973).

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