432 JOURNAL OF THE SOCIETY OF COSMETIC CHEMISTS (2) (3) (4) (5) (6) (7) (8) (9) (10) (11) (12) (13) (14) (15) (16) (17) (18) (19) (20) (21) (22) (23) (24) (25) (26) (27) M. Hannuksela, M. Kousa, and V. Pirila, Contact sensitivity to emulsifiers, Contact Dermatitis, 2, 201-204 (1976). W. C. Griffin, P.J. Carter, and R. W. Cehrens, Hydrophilic lanolin, Drug & Cosmetic Ind., 63, 312-313, 409-411 (1948). R. G. Harry, Modern Cosmeticology (Chemical Publishing, New York, 1947). R. G. Harry, Cosmetics.' Their Principle and Practices (Chemical Publishing, New York, 1956). B. W. Barry, Structure and rheology of emulsions stabilized by mixed emulsifiers, Rheol. Acta., 10, 96-105 (1971). I. Eros and E. Ugri-Hunyadvari, Investigation of the rheological characteristics of ointment gels containing emulsifiers and emulsion-type ointments, Cosmetics & Toiletries, 94(10), 67-79 (1979). A.M. Kligman and W. M. Woocling, A method for the measurement and evaluation of irritants on human skin, J. Invest. Dermatol., 49, 78-94 (1967). S. Fujii, M. Suzuki, K. Uehara, and T. Nakajima, The irritation and cell growth inhibition of POE nonionic surfactants, NishinihonJ. Derm., 41, 97-103 (1979). K. Shinoda, H. Saito, and H. Arai, The effect of the size and the distribution of the oxyethylene chain lengths of nonionic emulsifiers on the stability of emulsions, J. Colloid Interface Sci., 35, 624-630 (1971). R. T. Mcintyre, Polyglycerol esters, J. Am. Oil Chem. Soc., 56, 834A-840A (1979). W. Hemker, Associative structures of polyglycerol esters in food emulsions, J. Am. Oil Chem. Soc., 58, 114-119 (1981). Pharmaceutical Society of Japan, Ed., Standard Methods of Analysis for Hygiene Chemists (Kinbara Pub- lishing, Tokyo, 1980), p. 683. H. Sagitani, Making homogeneous and fine droplet O/W emulsions using nonionic surfactants, J. Am. Oil Chem. Soc., 58, 738-743 (1981). Appraisal of the Safety of Chemicals in Foods, Drugs and Cosmetics by the Staff of the Division of Pharmacology Foods and Drug Administration, Department of Health Education and Welfare Pub. 1959, by F.D.A. Officials of U.S. Business Office Topeka, Kansas, pp. 48-52 (1959). H. Saito, The relation between the foaming properties and the solute states of nonionic surfactants in aqueous solutions, Nippon Kagaku Zasshi, 92, 223-226 (1971). D. J. Mitchell, G. H. Tiddy, and L. Waring, Phase behaviour of polyoxyethylene surfactants with water, J. Chem. Soc. Faraday Trans., I, 79, 975-1000 (1983). K. Shinoda, Thermodynamic aspects of nonionic surfactant water system, J. Colloid Interface Sci., 34, 278-282 (1970). S. Friberg and L. Mandel, Phase equilibria and their influence on the properties of emulsions, J. Am. Oil Chem. Soc., 47, 149-152 (1970). N. Moucharafieh, S. E. Friberg, and D. W. Larsen, Effects of solubilized hydrocarbons on the struc- ture and the dislocation pattern in a lameIlar liquid crystal, Mol. Cryst. Liq. Cryst., 53, 189-205 (1979). W. C. Griffin, Calculation of HLB-values of non-ionic surfactants, J. Soc. Cosmet. Chem., 5, 249-256 (1954). H. Saito and K. Shinoda, Determination of average oxyethylene chain length of nonionic surfactants by cloud point measurement, J. Jpn. Oil Chem. Soc., 22, 785-789 (1973). J. M. Corkill, J. F. Goodman, and R. H. Ottewill, Micellization of homogeneous, nonionic deter- gents, Trans. Faraday Soc., 57, 1627-1636 (1961). M.J. Schick, Surface film of nonionic detergent. I. Surface tension study, J. Colloid Sci., 17, 801-813 (1962). K. Shinoda and T. Yoneyama, Evaluation of emulsifier blending , J, Dispersion Sd. Technolol., 1, 1-12 (1980). P. Becher, Emulsions.' Theory and Practice (Reinhold Publishing Co., 1965), p. 268. H. Saito and K. Shinoda, The stability of W/O type emulsions as a function of temperature and of the hydrophilic chain length of the emulsifier, J. Colloid Interface Sci., 32, 647-651 (1970).

POLY(GLYCERYL) ALKYL ETHER SURFACTANTS 433 (28) (29) (30) (31) (32) H. Sagitani, Y. Hirai, K. Nabeta, and M. Nagai, Effect of types of polyols on surfactant phase emulsification, J. Jpn. Oil Chem. Soc., 35, 102-107 (1986). H. Kunieda and K. Shinoda, Phase behavior in systems of nonionic surfactant/water/oil around the hydrophile-lipophile-balance temperature, J. Dispersion Sci. Technolol., 3, 233-244 (1982). K. Shinoda, H. Kunieda, T. Arai, and H. Saijo, Principles of attaining very large solubilization (microemulsion): Inclusive understanding of the solubilization of oil and water in aqueous and hydro- carbon media, J. Phys. Chem., 88, 5126-5129 (1984). K. Kunieda and K. Shinoda, Correlation between critical solution phenomena and ultralow interfacial tensions in a surfactant/water/oil system, Bull. Chem. Soc. Jpn., 55, 1777-1781 (1982). S. Hoshizaki and H. Nakahata, Application of water holding polymers as skin moisturizer, Proceeding of the International Federation of the Cosmetic Chemists Society, Paris, 337 - 354 (1982).