ABSTRACTS 497 Measurement Study on Male Skin Damage Caused hy reason why high moisturizer content generates strong Electric Shavers stickiness is that the polar group of the molecule is exposed to the surface. Thus, we began with the hypothesis that Manami Kuruto, Mi yu ki Shiohara, Kaoru Suganuma stickiness could be prevented through coexistence with a substance minimizing the exposure of the polar group. FCG Research Institute, Inc., Fuji Television Bid. ANNEX Using glycerin as a moisturizing agent, we screened a large 6F, 3-32-42, Higashi-Shinagawa, Tokyo 140-0002, Japan Shinagawa-ku, number of conventional materials for reducing stickiness but failed to find an effective compound. We then considered the use of a polymer for this purpose, and Shaving is one of the daily tasks for most men. However, shaving has caused damage to the skin in many cases. In this study, we observed the skin and beards of21 men aged from 24 to 62 yr and investigated the influence on the skin and the peiformance of shaving using three models of electric shavers. As the result, it was found that subjecL� who have a thicker beard or subjects who take a longer time for shaving tend to have dry skin, rough skin and skin with pigmented spots. On comparison of the three models of electric shavers, one rotary shaver had few instances of TEWL and bleeding. The rotary shaver was the gentlest to the skin of the three models. The other two models were swing shavers. On sensory evaluation, "sharpness of the three models" and "a feeling of close shave" tended to have a linear relation with increase in TEWL and increase in redness. Then it was observed that it is easy to misunderstand the burden on skin with good shaving perfonnance. A� it was revealed that the rough skin of a man is mainly caused by shaving in this study, the importance of shaving and skin care to reduce the hurden on the skin was shown. synthesized a custom-made polymer, polyglycolmethacrylate-2-hydroxyethylmethacrylate­ fluoroalkylacrylate copolymer (Polymer SR). Our experiments revealed that Polymer SR reduces the stickiness of glycerin by forming a hydrophobic film without hindering moisturizing petformance. To clarify the mechanism by which Polymer SR restrains stickiness, we investigated the interaction between the Polymer SR and glycerin in solution form with NNIR and static light­ scattering measurements. We learned that Polymer SR and glycerin exist on skin as the hydrophobic group of Polymer SR orients to the outside. Subjective sensory test� supported our belief that this hydrophobic orientation is maintained on the dermal surface even after application to the skin. We believe that our technique for restraining the stickiness of moisturizers can be adopted for use with other substances by taking into account the intended function and feel, and will contribute to future cosmetic research. Studies on Decomposition by Heating of Blue No. 1 (Brilliant Blue FCF) in an Alkaline Solution Simultaneous Enhancement of Cosmetic Function and Feel Sumiko Tsuji, Hiroshi Tokunaga via Molecular Investigation of Stickiness Hiroki Kudoh"'2, Hirokazu lyanagi"'3, Kenichi Yoshizawa"'4, Sayuri Okura"'2, Katsuhiko Nakamae"'5 Skincare Products R&D Department"'2, Makeup Products R&D Departrnent"'3, POLA Chemical Industries, Inc., 27- 1, Takashimadai, Kanagawa-ku, Yokohama 221-0833, Japan - Quality Design & Assurance R&D Department"'4, POLA Chetnical Industries, Inc., 560, Kashio-cho Totsuka­ ku, Yokohama 224-0812, Japan - Japan Synchrotron Radiation Research Institute"'5, 1-1-1, Kouto, Sayo-cho, Sayo-gun, Hyogo 675-5198, Japan Moisturizing performance is often a very i mp ortant factor in cosmetics. However, incorporating high concentrations of moisturizing agents often causes products to become sticky, a feel that consumers dislike. We suspected that the National Institute of Health Sciences, 1-18-1, Kamiyoga, Setagaya-ku, Tokyo 158-8501, Japan It is known that Blue No. I (Bl brilliant blue FCF) in an alkaline solution can be decomposed on heating. However, it is also known that the color tone of Bl when in alkaline solution fonn does not change at room temperature. In this study, the heating decomposition of Bl in an alkaline solution was examined using liquid chromatography/mass spectrometry (LC/MS) and HPLC. As a result, the generation of ethylamino subsidiary (Blsub-EA) and phenol subsidiary (Blsub-HP) colors that existed in commercial BI were confirmed. The generation of B 1 sub­ EA was very limited, and most of the decomposition of Bl was Bl sub-HP that showed in a purplish-red color. It had been suggested that Blsub-HP should change into an oxocyclohexadienyli dene subsidiary color (B 1 sub-OCD)

498 JOURNAL OF COSMETIC SCIENCE when in an alkaline solution. It has been suggested that the examples of applications are discussed. The 2 ]st century is isomeriz.ation of BJ should similarly proceed to the quarter said to be the era of environmental protection and many ammonium hydroxide fonn of cyclohexadienylidene with attempl'l are being made to create a recirculation-based the same maximum wavelength, The effect of temperature society, which 1s imparitive for future generations. The on decomposition was also observed. Jt is suggested that starting paint in manufacturing beqins by developing the color tone of Bl when in an alkaline solution should not fabrication processes that have a minimal burden on the change in a short time because the decomposition of BJ 1s earth, where goods are intended to maintain and improve slow at a low temperatures. necessary function.� in the daily lives of people. Two concrete examples using surface technology to build healthy and comfortable dwelling spaces are explained. Human and Environment-Friendly Materials for Dwelling One is hydrothermally solidified mesoporous materials S pa ces using soil to control indoor humidity autonomously and adsorb VCX::s. The other is on anti-stain surface treatment. Norifumi lsu One of the biggest tasks at home is cleaning around the kitchen area where water is used. Much energy and General Research Institute of Technology, JNAX resources are consumed for removing dirt or stains at home Corporation, 3-77, Minato, Tokoname 479-8588, Japan as well as in buildings. An anti-stain surface treatment that resembles the characteristics of a snail shell was applied to In this paper, the fundamental technologies related to the sanitary wear surface to prevent soluble silicic acid human and environment-friendly manufacturing and two scaling from tap water.