568 JOURNAL OF COSMETIC SCIENCE Table IV Mild Detersive Formula of Emulsifying Wax With 30% SCI INCI name Trade name Percentage (%) Emulsifying wax NF Polawax © 10.00 Sodium cocoyl isethionate Hostapon SCI 85G © or Jordapon CI Prill © 30.00 Reology modifier q.s. Preservative q.s. Fragrance q.s. Water To 100% librium of solubilization, and the structures of SCI and other surfactants. These methods can be used individually or in combination. Chemists can use method I and III to make sulfate-free shampoos, body washes, and facial cleansers that are mild and have excellent afterfeel characteristics. Method II can be used to make inexpensive shampoos, body washes, and facial cleansers. These methods enable chemists to take advantage of the excellent properties associated with SCI in a variety of personal care applications at a reasonable price. REFERENCES (1) J. D. Middleton, J. Soc. Cosmet. Chem., 20, 339 (1969). (2) P.J. Frosch and A.M. Kligman, J. Am. Acad. Dermatol., 1, 35 (1979). (3) A. N. Liebert, Final report on the safety assessment of sodium cocoyl isethionate,J. Am. College Toxico/., 12, 459 (1993). (4) H. Plate, Magnesium surfactants--Cleansing at its best and mildest, Parrum. Kosmet., 76, 28-32 (1995). (5) D. W. Williams and W. H. Schmitt, Chemistry and Technology of the Cosmetics and Toiletties Industry, 2nd ed. (Blackie Academic & Professional, 1996), pp. 7-8. (6) M. M. Rieger and D. R. Linda, Surfactants in Cosmetics, 2rid ed. (Marcel Dekker, New York, 1997), pp. 29-81,427-487. (7) R. S. Lee and T. M. F. Salmon, Detergent composition, US Patent 5,415,810 (Lever Brothers Company, 1995). (8) G. S. Gabriel, R. B. Bell, and M. Einziger, Stable liquid delivery system for acyl isethionates, US Patent 5,925,603 (Rhodia Inc., 1999). (9) T.J. Cassady and R. R. Schoettker, Process for making skin cleansing combination soap bars and cleansing liquids, US Patent 6,046,147 (Henkel Corp., 2000). (10) M. Born, Verband/. Deut. Physik. Ges., 21, (1919) F. Haber, Verband/. Deut. Physik. Ges., 21, 750 (1919). (11) P. W. Arkins, Physical Chemistry, 3rd ed. (Oxford University Press, 1986), p. 823. (12) J. Z. Sun and J. W. Parr, Liquid detersire composition containing sodium cocoyl isethionate, US patent pending.

j. Cosmet. Sci., 54, 569-577 (November/December 2003) Nano-structured biphasic polymer film on the hair surface from PEGylated polymer latexes HEE-KYUNG JU, JIN-WOONG KIM, JI-YOUNG PARK, HAK-HEE KANG, SEONG-GEUN OH, and KYUNG-DO SUH, Amore-Pacific ROD Center, 314-1, Bora-ri, Gihe•ng-eup, Yongin-d, Gyeonggi-do 449-726 (H.-K.J., J.-W.K., J.-Y.P., H.-H.K.) and Department of Chemical Engineering, College of Engineering, Hanyang University, Seoul 133-791 (S.-G.O., K.-D.S.), South Korea Accepted for publication July 29, 2003. Synopsis In this study, biphasic polymer latexes were synthesized by surfactant-free-emulsion polymerization of butyl methacrylate, poly(ethylene glycol) methyl ether methacrylate, and 2-(methacryloyloxy) ethyl trimethyl ammonium chloride. The latexes synthesized were composed of hydrophobic core phase and hydrophilic shell phase. Nano-structured film morphology could be obtained by annealing the biphasic polymer latexes between the two transition temperatures. It was found that the unique film morphology gave a viscoelastic property to the film. Scanning electron microscope and atomic force microscope images revealed that the biphasic polymer latexes deposited effectively onto the entire hair surface upon conditioning with 1 wt% polymer concentration in water. Consequently, they formed a smooth polymer membrane thereon, showing a high potential for a new hair cosmetic ingredient. INTRODUCTION Hair styling has been emphasized as a useful tool to express beauty. It has been required that the styling of hair should be performed conveniently, without causing any damage to the hair. Until recently, many different formulations, including hair-setting lotion, hair gel, hairspray, and blowing agents, have been developed and used widely. Usually, the incorporation of polymers into the formulation is an area of particular interest for the achievement of intended physical properties in hair cosmetics. This has a big advantage in that we can easily get good holding power, prolonged curl retention, low stickiness, lack of flaking, gloss, transparency, a good feel, etc. (1-3). However, most of the polymers are dissolved in organic solvents, which causes an undesirable odor and incompatibility with other additives. To solve this problem, the incorporation of poly- mers with a form of latex has been proposed. Actually, Yahagi and Suzuki reported that Address all correspondence to Jin-Woong Kim. 569