536 JOURNAL OF COSMETIC SCIENCE parameter, tau, which correlates with the three-dimensional combination of NIR-DR spectroscopy and principal structures of dermal collagen fibers, did not change component analysis (PCA) were applied to development of linearly, but showed interesting behavior with age. In an evaluation of hair damage and we found the most addition, no correlation was shown between tau and water suitable wavenumber region (5060-4500 cm-I) for the content of the stratum comeum. These results suggested gradual changes of the matrix components in the dermis with age. However, most of the subjects without obvious skin aging symptoms did not notice such changes in the dermis. We think that the estimation of the degree of UV­ induced skin damage in the early photoaging stage using a variety of non-invasive methods is beneficial for cosmetic evaluation of hair damage. In this study, we developed a new evaluation method that can indicate hair interior and surface damage conditions induced by chemical treatments in a simple, rapid, non-destructive manner based on NIR­ DR spectroscopy by putting a fiber probe on hair. users to notice their skin condition and to find an Continuous Three-Dimensional Examination of Interior appropriate skin care solution. Hair Structure Ken-ichi Tanaka, Yutaka Tango, Koichi Shimmoto A Non-Destructive Method for Assessing Interior and Research & Development Headquarter, KOSE Corporation Surface Hair Damage by Near Infrared Spectroscopy 48-18, Sakae-cho, Kita-ku, Tokyo 114-0005, Japan Yuta Miyamae*, Yumika Yamakawa*, Yukihiro Ozaki** The ability to examine interior hair structure is very POLA Chemical Industries, Inc.*, Department of important in designing effective hair products. But a non­ Chemistry, School of Science and Technology, Kwansei- destructive method for continuous, full-color examination Gakuin University**, *560, Kashio-cho, Totsuka-ku, of the interior hair structure has been lacking. This study Yokohama 244-0812, Japan, **2-1, Gakuen, Sanda 669- proposes a new method that enables non-destructive and 1337,Japan continuous measurement of the interior hair structure with color information. In our method, Optical CT (OCT) is This paper reports a non-destructive method for evaluating used for reconstruction of interior hair structure. Our new hair interior and surface damage based on near-infrared theories enabled us to solve the crucial problem of an OCT (NIR) diffuse reflectance (DR) spectroscopy. It is important system related to a large observational error caused by to know the extent of chemical damage in the interior and internal light scattering, and to make practical application surface proteins of the hair in order to choose an possible. A new OCT system based on our method was appropriate restoration agent or chemical treatment. implemented. This system displayed sufficient accuracy Unfortunately, though there are many simple and non- when the phantom image was measured, and by observing destructive methods for evaluating the hair surface, the human hair, clear and full-color cross-sectional images existing evaluation methods for monitoring chemical were obtained without destruction of the sample. When the changes in the interior proteins are very complicated and bleaching and dyeing processes were continuously destructive. Therefore, we have attempted to develop a new measured, changes in the interior hair with time could be non-destructive method to evaluate the damage to the hair observed. These results clearly indicate that our new interior and surface simultaneously by using NIR-DR method provides a powerful tool in research and product spectroscopy. The key to this study was that the development. Vol. 41, No. 2, 2007 An Introduction of Filling up and Molding Technology In the production plant, efficiency improvement and high such as Powder Foundation and of Some Cases in the quality are called for. In addition, a lot of problems that Factory cannot be predicted in the laboratory occur. This lecture Tatsuya Hasegawa introduces the problems and solutions to the powder Manufacturing Technology R&D Laboratories, POLA Chemical Industries, Inc. 1234, Aino, Hukuroi 437_8765, molding that occur on the production site from the Japan viewpoint of a production system engineer.

ABSTRACTS 537 Physiological and Morphological Changes of the Facial Physiological and Morphological Changes of the Facial Skin with Advancing Age and Self-Consciousness in Skin with Aging and Self-Consciousness in Japanese Men Japanese Men (First Report) ---Differences between Facial (Second Report) ---Changes in the Wrinkle Formation and Sites and Changes with Season and Advancing Age of Skin Facial Skin Color with Advancing Age and Men's Fundamental Properties--- Kazuyoshi Onishi, Ayumi Yamaguchi, Ken-ichi Kuriyama, Yoshio Tsujino, Nobuki Fujiwara Central Research Laboratories, Mandom Corp., 5-12, Juniken-cho, Chuo-ku, Osaka 540-8530, Japan Consciousness of Facial Cares--- Ayumi Yamaguchi, Kazuyoshi Onishi, Ken-ichi Kuriyama, Yoshio Tsujino, Nobuki Fujiwara Central Research Laboratories, Mandom Corp., 5-12, Juniken-cho, Chuo-ku, Osaka 540-8530, Japan The visual examination of wrinkle formation and the measurement of skin color were conducted to investigate The physiological study of Japanese men's facial skin and the changes of appearance in Japanese men's faces with differences between men and women in facial skin has advancing age. At the comers of the eyes, the deepest linear rarely been reported. Thus, we conducted non-invasive wrinkles developed deeper, whereas most fine wrinkles measurement of skin conductance, skin surface lipid and developed at the suborbital site with advancing age. The transepidermal water loss and skin mechanical properties wrinkle formation was accentuated at around 40 in the and analyzed those changes with seasons, with advancing comer of the eyes and around 50 in the suborbital site. age and those differences between men and women. Our Individual variation in wrinkle formation was more purpose was to investigate the fundamental physiological remarkable in the suborbital site than in the corners of the properties of Japanese men's facial skin. The results of our eyes. The subjects having more accentuated wrinkles at the study established the following facts : I. In skin suborbital site among same generation (40's) tended to conductance and skin surface lipid production, the show higher TEWL and lower skin conductance. An physiological differences between the T-zone and U-zone increase in redness and decrease in brightness of facial skin of men were more remarkable than that of women, 2. with advancing age were confinned. Before their 40's, a Contrary trends were shown in T-zone and U-zone for the seasonal change in which the facial brightness became seasonal changes of TEWL and final distension lower in summer and higher in winter was detected, respectively, 3. The lower cheek was the driest part in whereas after the 40's, no significant difference in the men's facial skin throughout the year, 4. A high negative seasonal change was found. The aging symptom of men correlation coefficient was confirmed between total was obviously worsened at about 40 years old. distension and actual age in men's facial skin and total Synchronously, they began to recognize the changes in distension can serve as an index of aging change in appearance of their own faces. Men who were interested in Japanese men's facial skin, 5. Differences in the methods of skin care products were not many in contrast with women, shaving and the use of sunscreen cosmetics had an whereas they hoped to look much younger and recognized influence on aging changes in Japanese men's facial skin. that skin care is necessary.