ANTIMICROBIAL EFFECT OF ZPT 31 1 06 •10 $ I 04 1 03 t o o o ©o Ye ß o Anaerobic bacteria ,, •e s t Shampoo Figure 2. Quantitative microbiology of the scalp observed before and after ZPT shampoo treatment in comparison with that of DP-300. I ß ZPT shampoo O [] DP-300 shampoo. Pityrosporum ovale, although there is a possiblity that corneocyte counts have a certain lag period to recover to the control level even after the increase in Pityrosporum ovale. NON-SHAMPOOING EFFECT ON SUPPRESSED DANDRUFF SITUATIONS The effect of no-shampooing on dandruff and microbial counts suppressed by ZPT was subsequently studied. No shampooing for six successive days disclosed recovered

32 JOURNAL OF THE SOCIETY OF COSMETIC CHEMISTS 1 07 •: 06 = 0 5 =1 o 04 o •-,. 0 o o o ß o o o o o o o ß o o -•- ........ -O- 4- ß P-• 0.001 Aerobe Anaero be Yeast I I I I I I & I 2 3 4 Week -*-Test Period -• Figure 3a. Effect of non-medicated shampooing for 1 week on the microbial count of the scalp, where dandruff suppression has been induced by ZPT.

Purchased for the exclusive use of nofirst nolast (unknown)
From: SCC Media Library & Resource Center (library.scconline.org)