308 (1) JOURNAL OF COSMETIC SCIENCE Transversely polished Hair Plane Collision of argon ions generates heat on the surface. (2) Melting lipids at the CMC by heat ooze out from the inside to the surface. (3) Lipids at the CMC on the surface are chemically changed. Figure 10. Schematic diagram of the mechanism underlying the convex formation of SP at the CMC on the surface of the hair plane during ASE. images are detectable as staining patterns similar to that of hair fibers with higher contents of hair lipids. CONCLUSIONS This study explored a novel method using ASE-SEM to observe the convex CP of melanin granules and the convex SP of CMC in transversely polished hair planes. With ASE-SEM, visualization of hair lipids as convex structures of SP should enable us to characterize the fine structure and localization of hair lipids and to clarify the role(s) and function(s) of the CMC of hair. ACKNOWLEDGMENTS We express our cordial gratitude to Dr. Kouichi Nakamura and Dr. Katsumi Kita for

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