Tadahito Takahashi, H. Miyamoto, Takahiro Kono, Hiroki Gonome, J. Yamada, Akihito Shundo
Ultrafine particles having diameters in the submicron region have often been used as cosmetic materials because they have excellent optical properties, such as transparency and UV light protection. However, these particles have interfacial energy higher than conventional pigments; thus, they have a tendency to interact with each other to form a secondary agglomeration which may cause deterioration of those functions. To solve these problems, applying high shear force using a high-speed mixer is one of the prospective methods to produce monodispersed uniform dispersion of ultrafine particles. In this study, the relationship between optical properties and high-speed mixing was examined using a high speed thin film mixer. When hydrophilic TiO 2 nanoparticles were dispersed in ion-exchanged water, the extinction coefficient decreased in accordance with the peripheral speed of the rotor. Particle size distribution depends on the mixing speed and has good correlation with the increase of distinction coefficient.
{"title":"The Optical Properties of Nanoparticle Dispersions Prepared by a High Speed Thin Film Mixer","authors":"Tadahito Takahashi, H. Miyamoto, Takahiro Kono, Hiroki Gonome, J. Yamada, Akihito Shundo","doi":"10.5107/sccj.51.142","DOIUrl":"https://doi.org/10.5107/sccj.51.142","url":null,"abstract":"Ultrafine particles having diameters in the submicron region have often been used as cosmetic materials because they have excellent optical properties, such as transparency and UV light protection. However, these particles have interfacial energy higher than conventional pigments; thus, they have a tendency to interact with each other to form a secondary agglomeration which may cause deterioration of those functions. To solve these problems, applying high shear force using a high-speed mixer is one of the prospective methods to produce monodispersed uniform dispersion of ultrafine particles. In this study, the relationship between optical properties and high-speed mixing was examined using a high speed thin film mixer. When hydrophilic TiO 2 nanoparticles were dispersed in ion-exchanged water, the extinction coefficient decreased in accordance with the peripheral speed of the rotor. Particle size distribution depends on the mixing speed and has good correlation with the increase of distinction coefficient.","PeriodicalId":17464,"journal":{"name":"Journal of the society of cosmetic chemists","volume":"49 1","pages":"142-146"},"PeriodicalIF":0.0,"publicationDate":"2017-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80619608","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Moeko Doi, Yuki Sagawa, Taeko Mizutani, Y. Okano, S. Momose, Tanaka Takumi, H. Masaki
Sacran is a unique polysaccharide isolated from an alga, Aphanothece sacrum(Suizenji-nori)1).The molecular weight is about 29 MDa, which may be the largest molecule in the world as a natural polysaccharide, and the length of one molecular is about 10 mm 1).The molecule is composed of 11 kinds of saccharides, including sulfuric acid and carboxylic acid 2).It has been reported that sacran shows very high water retention compared with hyaluronic acid, because of its unique structure. In addition, we have also reported possibilities that sacran inhibits skin sensitization and reduces allergic reaction due to its permeation into a reconstructed epidermal model which has an immaPossibilities of Sacran-Polyol Complexes in Skin Care ─ Evaluations of Chemical and Physical Aspects─
{"title":"Possibilities of Sacran-Polyol Complexes in Skin Care: — Evaluations of Chemical and Physical Aspects —@@@—化学的, 物理的側面からのアプローチ—","authors":"Moeko Doi, Yuki Sagawa, Taeko Mizutani, Y. Okano, S. Momose, Tanaka Takumi, H. Masaki","doi":"10.5107/SCCJ.51.117","DOIUrl":"https://doi.org/10.5107/SCCJ.51.117","url":null,"abstract":"Sacran is a unique polysaccharide isolated from an alga, Aphanothece sacrum(Suizenji-nori)1).The molecular weight is about 29 MDa, which may be the largest molecule in the world as a natural polysaccharide, and the length of one molecular is about 10 mm 1).The molecule is composed of 11 kinds of saccharides, including sulfuric acid and carboxylic acid 2).It has been reported that sacran shows very high water retention compared with hyaluronic acid, because of its unique structure. In addition, we have also reported possibilities that sacran inhibits skin sensitization and reduces allergic reaction due to its permeation into a reconstructed epidermal model which has an immaPossibilities of Sacran-Polyol Complexes in Skin Care ─ Evaluations of Chemical and Physical Aspects─","PeriodicalId":17464,"journal":{"name":"Journal of the society of cosmetic chemists","volume":"7 1","pages":"117-125"},"PeriodicalIF":0.0,"publicationDate":"2017-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90071315","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Preparation of Oil-in-Water Emulsion with a Good Texture of Use and Waterproofness Using the Gemini Surfactant","authors":"S. Norio, Shimizu Katsuya","doi":"10.5107/SCCJ.51.18","DOIUrl":"https://doi.org/10.5107/SCCJ.51.18","url":null,"abstract":"","PeriodicalId":17464,"journal":{"name":"Journal of the society of cosmetic chemists","volume":"26 1","pages":"18-26"},"PeriodicalIF":0.0,"publicationDate":"2017-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78874211","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Developing High Performance Sunscreen Products without PEG-based Surfactants","authors":"S. Dairaku, Wataru Horie, Yukari Sakazaki","doi":"10.5107/SCCJ.50.314","DOIUrl":"https://doi.org/10.5107/SCCJ.50.314","url":null,"abstract":"","PeriodicalId":17464,"journal":{"name":"Journal of the society of cosmetic chemists","volume":"23 1","pages":"314-320"},"PeriodicalIF":0.0,"publicationDate":"2017-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85666683","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Most age-related changes that appear on the surface of facial skin are caused by changes within the skin. Therefore, analyzing the internal state of the skin could make it possible to provide evidence-based counseling, which could offer benefits to customers. However, it is difficult to perform simple analyses of the inner condition of the skin, and conventional methods of analysis generally require costly laboratory equipment. Therefore, we used multiple regression analysis to create an estimation formula to calculate the skin’s inner structure feature values based on skin surface feature values, which can be easily obtained. As objective variables, we used the number of dermal papillary structures and a score for dermal fibrous structure clearness. As explanatory variables, we used the feature values for sulci cutis and crista cutis characteristics, color characteristics, and frequency characteristics, as calculated from data including skin images. The concordance rate between corresponding beforeand after-scores obtained with our novel estimation formula and the actual scores based on measured values for the number of dermal papilla structures was 100% and that for the clearness of dermal fibrous structures was 95%. These results demonstrate that skin surface feature values, which can be obtained using a simple device such as a microscope, can be used to estimate the condition of the inner structures of the skin, including the number of dermal papillary structures and the clearness of dermal fibrous structures.
{"title":"A Simple Method for Assessment of Age-Related Changes in Physical Properties of Facial Dermal Papilla and Fibrous Structures","authors":"K. Mizukoshi, K. Hirayama","doi":"10.5107/SCCJ.51.219","DOIUrl":"https://doi.org/10.5107/SCCJ.51.219","url":null,"abstract":"Most age-related changes that appear on the surface of facial skin are caused by changes within the skin. Therefore, analyzing the internal state of the skin could make it possible to provide evidence-based counseling, which could offer benefits to customers. However, it is difficult to perform simple analyses of the inner condition of the skin, and conventional methods of analysis generally require costly laboratory equipment. Therefore, we used multiple regression analysis to create an estimation formula to calculate the skin’s inner structure feature values based on skin surface feature values, which can be easily obtained. As objective variables, we used the number of dermal papillary structures and a score for dermal fibrous structure clearness. As explanatory variables, we used the feature values for sulci cutis and crista cutis characteristics, color characteristics, and frequency characteristics, as calculated from data including skin images. The concordance rate between corresponding beforeand after-scores obtained with our novel estimation formula and the actual scores based on measured values for the number of dermal papilla structures was 100% and that for the clearness of dermal fibrous structures was 95%. These results demonstrate that skin surface feature values, which can be obtained using a simple device such as a microscope, can be used to estimate the condition of the inner structures of the skin, including the number of dermal papillary structures and the clearness of dermal fibrous structures.","PeriodicalId":17464,"journal":{"name":"Journal of the society of cosmetic chemists","volume":"16 1","pages":"219-229"},"PeriodicalIF":0.0,"publicationDate":"2017-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85383096","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
E. Kakizawa, Y. Masubuchi, Masaki Okuyama, Akinobu Hayashi
{"title":"Aesthetic Shape-Controlling Mascara Contributes to Enhanced Social Impressions","authors":"E. Kakizawa, Y. Masubuchi, Masaki Okuyama, Akinobu Hayashi","doi":"10.5107/SCCJ.50.294","DOIUrl":"https://doi.org/10.5107/SCCJ.50.294","url":null,"abstract":"","PeriodicalId":17464,"journal":{"name":"Journal of the society of cosmetic chemists","volume":"7 1","pages":"294-305"},"PeriodicalIF":0.0,"publicationDate":"2017-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77417832","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Yuhko Murakami, Hiroaki Adachi, Hiroshi Tanaka, Youichi Yashiro, S. Nakata
Transient receptor potential melastatin 8 (TRPM8) is the cold stimulus receptor found as a member of the temperature sensor transient receptor potential (TRP) family in peripheral sensory nerves. Currently, some studies about TRPM8 functions besides the temperature sensor are in progress, but little is known about the role of TRPM8 in human skin melanocytes. Therefore, we examined the function and effect of Geranium robertianum L. on TRPM8 in human skin melanocytes. As a result, mRNA expressions of melanin synthesis-related factors were decreased by this TRPM8 activator. On the other hand, a TRPM8 inhibitor exerted reverse effects. In UVB-irradiated melanocytes, TRPM8 activity and mRNA expression were decreased, and mRNA expressions of melanin synthesis-related factors were increased. Moreover, Geranium robertianum L. increased TRPM8 activity and mRNA expression, and decreased mRNA expressions of melanin synthesis-related factors in human skin melanocytes. On the basis of these results, it was concluded that TRPM8 had a suppressive function for melanin synthesis and the reduction of this function by UVB irradiation induced the acceleration of melanin synthesis in skin melanocytes. Since Geranium robertianum L. enhanced TRPM8 activity and mRNA level, it may prevent and improve pigmentation induced by the excessive synthesis of melanin.
{"title":"TRPM8 Controls Melanin Synthesis in Human Skin Melanocyte","authors":"Yuhko Murakami, Hiroaki Adachi, Hiroshi Tanaka, Youichi Yashiro, S. Nakata","doi":"10.5107/SCCJ.51.300","DOIUrl":"https://doi.org/10.5107/SCCJ.51.300","url":null,"abstract":"Transient receptor potential melastatin 8 (TRPM8) is the cold stimulus receptor found as a member of the temperature sensor transient receptor potential (TRP) family in peripheral sensory nerves. Currently, some studies about TRPM8 functions besides the temperature sensor are in progress, but little is known about the role of TRPM8 in human skin melanocytes. Therefore, we examined the function and effect of Geranium robertianum L. on TRPM8 in human skin melanocytes. As a result, mRNA expressions of melanin synthesis-related factors were decreased by this TRPM8 activator. On the other hand, a TRPM8 inhibitor exerted reverse effects. In UVB-irradiated melanocytes, TRPM8 activity and mRNA expression were decreased, and mRNA expressions of melanin synthesis-related factors were increased. Moreover, Geranium robertianum L. increased TRPM8 activity and mRNA expression, and decreased mRNA expressions of melanin synthesis-related factors in human skin melanocytes. On the basis of these results, it was concluded that TRPM8 had a suppressive function for melanin synthesis and the reduction of this function by UVB irradiation induced the acceleration of melanin synthesis in skin melanocytes. Since Geranium robertianum L. enhanced TRPM8 activity and mRNA level, it may prevent and improve pigmentation induced by the excessive synthesis of melanin.","PeriodicalId":17464,"journal":{"name":"Journal of the society of cosmetic chemists","volume":"44 1","pages":"300-310"},"PeriodicalIF":0.0,"publicationDate":"2017-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86662580","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"β-グリチルレチン酸／ラウリルジメチルアミンオキシド水溶液のミセル構造解析","authors":"小田 満智子, 貞徳 坂, 浩志 浅野, 路郎 北原, 悟 中田","doi":"10.5107/SCCJ.51.41","DOIUrl":"https://doi.org/10.5107/SCCJ.51.41","url":null,"abstract":"","PeriodicalId":17464,"journal":{"name":"Journal of the society of cosmetic chemists","volume":"35 1","pages":"41-46"},"PeriodicalIF":0.0,"publicationDate":"2017-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78163652","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Sakiko Aizawa, Mika Tsurumaki, Noriyasu Imai, T. Masunaga, M. Nakade, K. Kameyama
{"title":"Development of an in vitro Tiered Approach to Evaluate Phototoxic Potential","authors":"Sakiko Aizawa, Mika Tsurumaki, Noriyasu Imai, T. Masunaga, M. Nakade, K. Kameyama","doi":"10.5107/SCCJ.51.293","DOIUrl":"https://doi.org/10.5107/SCCJ.51.293","url":null,"abstract":"","PeriodicalId":17464,"journal":{"name":"Journal of the society of cosmetic chemists","volume":"27 1","pages":"293-299"},"PeriodicalIF":0.0,"publicationDate":"2017-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91186642","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Hirotake Yamaguchi, K. Oosumi, T. Sakaida, O. Hirose, Youichi Yashiro, S. Nakata
{"title":"Improvement of Facial Pore Visibility by Fermented Pomegranate","authors":"Hirotake Yamaguchi, K. Oosumi, T. Sakaida, O. Hirose, Youichi Yashiro, S. Nakata","doi":"10.5107/SCCJ.51.27","DOIUrl":"https://doi.org/10.5107/SCCJ.51.27","url":null,"abstract":"","PeriodicalId":17464,"journal":{"name":"Journal of the society of cosmetic chemists","volume":"90 1","pages":"27-32"},"PeriodicalIF":0.0,"publicationDate":"2017-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88951044","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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