Journal of Society of Cosmetic Chemists of Japan
Online ISSN : 1884-4146
Print ISSN : 0387-5253
ISSN-L : 0387-5253
Volume 29, Issue 3
Displaying 1-9 of 9 articles from this issue
  • Akiko Takano, Tomoji Murata, Yujin Tabata
    1995 Volume 29 Issue 3 Pages 221-226
    Published: November 30, 1995
    Released on J-STAGE: August 06, 2010
    JOURNAL FREE ACCESS
    Selachyl alcohol can contain up to 30% water. It forms a liquid crystal in the presence of water at about 11-88°C. At about 35°C, this liquid crystal has a very high water retention which lasts for a long period of time. When mixed with vaseline, its water-holding capacity is greatly increased. Compared to other emollients, it shows a high moisture permeability. It is not occlusive to the skin.
    To study its actual effects on human skin, selachyl alcohol and two other cosmetic ingredients were applied to the skin on the underside of the forearm and the changes in the water content of the stratum corneum over time was measured. Using selachyl alcohol, the water content increased continuously for a period of one hour and then became constant, which is quite different from the results using isopropylmyristate and vaseline.
    The liquid crystal formed by selachyl alcohol and water gives excellent emolliency to the skin when used in cosmetic formulations. Selachyl alcohol can also be used in hair care cosmetics.
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  • Yukiyo Matsuzawa, Naoko Mikami
    1995 Volume 29 Issue 3 Pages 227-233
    Published: November 30, 1995
    Released on J-STAGE: August 06, 2010
    JOURNAL FREE ACCESS
    As a result of the evaluation of the squeaking for wet hair, we found the strong correlation between squeaking and frictional coeffcient on wet hair. Based on this result, the frictional coeffcient on the hair was evaluated to predict the squeakiness reducing effects of moisturizers on wet hair.
    Moisturizers investigated are PCA-Na, 1, 3-BG, Glycerin, Sorbitol and Lactate-Na. After each moisturizer was added into the SLES solution and hair pieces were washed in each solution, the frictional coefficient was measured. Among moisturizers, PCA-Na showed the remarkable friction reduction effect of wet hair.
    As for the variety of the anionic surfactant solutions, PCA-Na works as the most effective friction reducer for the surfactants bearing SO3H group.
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  • Kaoru Maeyama, Masahiro Tsujide, Seishi Ueda, Tadaya Kato
    1995 Volume 29 Issue 3 Pages 234-241
    Published: November 30, 1995
    Released on J-STAGE: August 06, 2010
    JOURNAL FREE ACCESS
    An ultrafinely dispersed O/W emulsion as cosmetics was made from an aqueous mixture between plate-shaped inorganic compounds and oily substances without any surfactant. A Na-Type colloidal silicate of the 3-octahedral smectite structure was used as a plate-shaped inorganic compound. Polyethylene glycol (PEG) was used as a water-soluble polymer.
    The PEG adsorption onto the surface of inorganic compound was to be expected for the effects of a steric stabilization mechanism. The mixtures of the silicate and PEG with both oil agents and water-soluble agents were homogenized by an ultrahigh-pressure homogenizer (more than 100MPa).
    The dynamic rheological measurements of the emulsions thus prepared were carried out using a parallel-plate rheometer and then storage moduli (G′), loss moduli (G″), and loss tangent (tan ∂) were obtained. The specific bulky structures, such as card-house structures, were formed throughout the emulsion as judged by a Cryo-SEM electron microscopic observation. These structures were broken down by higher shear-rate and easily reformed with decreasing shear-rate again.
    It was concluded that these structures were responsible for rheological properties of the cosmetic emulsions.
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  • Chihoko Kan, Satoshi Kimura
    1995 Volume 29 Issue 3 Pages 242-251
    Published: November 30, 1995
    Released on J-STAGE: August 06, 2010
    JOURNAL FREE ACCESS
    The benefits of makeups or perfumes are obvious to most users but quantifying these benefits is difficult. This is because they often include physiological and psychological attributes which are difficult to define and measure. While investigating physiological relationships between the pleasure of using cosmetics and the well-being of the users, we discovered evidences suggesting cosmetics use can elicit positive immunological responses.
    Using controlled experiments, we discovered that emotion of seeing oneself suddenly becoming more beautiful after application of makeup can be so positive to activate body's immune system and actually increase the concentration of antibodies. It was also found in another series of experiments that smelling of a pleasant fragrance can also cause positive immunological responses, increasing the amount of human secretory immunoglobulin A (S-IgA) present in the test subject's saliva.
    The discovery of the psychoneuroimmunological connection allows us to search for benefits of cosmetics which go beyond action of the skin surface. It also provides an evidence that cosmetics can benefit to the mind and body.
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  • Kentaro Kiyama, Hisashi Yamamoto, Hiroshi Nakano, Akira Kiyomiya
    1995 Volume 29 Issue 3 Pages 258-265
    Published: November 30, 1995
    Released on J-STAGE: August 06, 2010
    JOURNAL FREE ACCESS
    The structure and diffusion behavior of impermeable PVA (polyvinyl alcohol)-wall microcapsules containing a hydrophobic moisturizing agent as a core substance in a facial cleanser was investigated.
    Recently, new materials are necessary in cosmetics, creating new functions. But sometimes these kinds of materials are unstable in the final product.
    The crystalline PVA microcapsules were prepared by an improved salt coacervation method incorporating a water-soluble polymer. The mean particle size of 300μm is required in terms of the product appearance and the feeling while in use. Microcapsules, which have the mean wall thickness of 3μm, were selected because they satisfy the product design of not breaking at production and breaking while in use.
    The PVA microcapsules are much more stable in a facial cleanser containing surface active agents than widely-used gelatin-wall microcapsules.
    Good correlations were found between the diffusion coefficient of the moisturizing agent in microcapsule walls, led by the release curves, and the crystallinity of PVA-walls, led by the DSC method. This indicates that the existence of rigid crystalline parts improves the impermeability of materials.
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  • Masayo Tomita, Katsumi Ishiwata, Tasuku Takamatsu, Masahiro Matsuoka
    1995 Volume 29 Issue 3 Pages 266-269
    Published: November 30, 1995
    Released on J-STAGE: August 06, 2010
    JOURNAL FREE ACCESS
    The JCIC test method of titanium dioxide which was stipulated for a part of titanium dioxide related materials was examined firstly to replace the zincamalgum method in the JSCI, and secondly to apply to other related materials including surface treated titanium dioxides with alumina, fatty acids and silicones. It was found to be an excellent replacement for the zincamalgum method with R. S. D. not more than 1%. It could also be applied without any modification to various surface treated titanium dioxides except the silicone treated ones. However, an ignition at 500° or 800° for 2 hours of the silicone treated ones led to a successful application, and this pretreatment (888°, 2 hours) could be a common method for any related materials including the cosmetic products such as foundations. A time required for dissolution in sulfuric acid could also be fixed at 2 hours, and this is thought to be a generalized condition in combination with the above ignition pretreatment.
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  • Nobuo Okamoto, Sachiko Sakaki, Hitoshi Masaki
    1995 Volume 29 Issue 3 Pages 270-273
    Published: November 30, 1995
    Released on J-STAGE: August 06, 2010
    JOURNAL FREE ACCESS
    The relationship between photoaging skin which is characterized by deep wrinkles and pig mentation, and active oxygen species has been studied by many researchers.
    We had detected hydroxyl radicals in murine fibroblasts during UVB irradiation.
    In this study the scavenging activities of polyhydroxybenzoic acid derivatives on such hydroxyl radicals were evaluated using ESR-spin trapping and human fibroblasts culture system.
    Gallic acid showed the highest activity among chemicals tested in the both methods of ESR-spin trapping and the cell culture system.
    Furthermore, alkyl esters of gallic acid were evaluated on the protective activity against hydroxyl radicals-induced cell damage. Stearyl gallate showed the potent protection against the celldamage in situ and in pretreating.
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  • Takeshi Koresawa, Ryutaro Hashimoto
    1995 Volume 29 Issue 3 Pages 274-278
    Published: November 30, 1995
    Released on J-STAGE: August 06, 2010
    JOURNAL FREE ACCESS
    It is known that there is a regularity in acyl group at each glyceride position of natural fats and oils.
    Lanolin, which is chemically a complex of esters 75 alcohols and 138 fatty acids, were separated by TLC and its 5 fractions were obtained. During the coures of analysis, fatty acids were identified by GLC. We speculated that there was also a regularity in acyl group at each alcohol position. Normal fatty acids other than hydroxy fatty acids as a group exhibited obvious preference for cholesterol and iso-fatty acids were distributed at lanosterol position and hydroxy fatty acids were distributed at fatty alcohol position.
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  • Kinji Yao, Pigment Task Force, Japan Cosmetic Industry Association
    1995 Volume 29 Issue 3 Pages 279-281
    Published: November 30, 1995
    Released on J-STAGE: August 06, 2010
    JOURNAL FREE ACCESS
    Red No 201 (Lithol Rubine B) is defined as the monosodium salt by Japananese law (Shohrei). In USA, FDA had changed the chemical name for Lithol Rubne B as the disodium salt rather than the monosodium salt at 1983 because analytical results confirmed it.
    We tried quantitative determination of ionic bonded sodium-ion for Red-No 201 by ICP (Inductively Coupled Plasma Atomic Emission Spectrometry). ICP analysis showed that Red No 201 is bonded by two sodium-ion.
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