BEHAVIOUR OF COSMETIC CREAMS, LOTIONS AND OILS ON THE SKIN cosmetic field. Only experimental physiological research on the living human skin can throw light on the problems arising out of the mechanism and effects of cosmetic preparations on the skin. This particular study on the spreading and creeping of fats and oils on the skin surface gives at least a partial answer to the question: "What happens to cosmetic creams, lotions and oils on the skin ?" They spread out over large areas in thin films which can hardly be seen or felt. This then creates the impression that the prepara- tions have disappeared into the skin. IReceived : 18th October 19581 REFERENCES Rothman, S. J. Soc. Cosmetic Chemists, 6 (1955), 3. Unna, E., and Frey, W. Dermatol. Wochschr., 88 (1929), 327. Butcher, E. O. J. Invest. Dermatol., 21 (1953), 1. Bernhardt, H., and Strauch, C. Z. klin. gged., 106 (1927), 671. Barall, L. C., and Pescatore, J. J., quoted from Rothman, S. -physiology and Bio- chemistry of the skin. (1954.) (University of Chicago Press, Chicago). Guillot, M., and Valette, G. Tech. pharm. (_Paris), 8 (1954), 9. Eller, J. J., and Wolff, S. Arch. Dermatol. and Syphilol., 40 (1939), 930. Rothman, S. Physiology and Biochemistry of the skin (1954). (University of Chicago Press, Chicago'. v. Czetsch-Lindenwald, H. Arch. Gewerbepathol. Gewerbehyg., 10 (194(), 1. Kligman, A. iV[., and Shelley, W. B. J. Invest. Dermatol., 30 (1958). 3. '•Vheatley, V. R. St. Bartholome•v's Hospital J., London, 55 (1953), 637. Jacobi, O. Kolloid-Z., 142 (1949), 2. Kleine-Natrop, H. E. Fette u Seifen, 55 (1953), 863. Sulzberger, M. B. J. Soc. Cosmetic Chemists, 6 (1955), 3. Jones, K. K., Spencer, M. C., and Sanchez, S. A. J. Invest. Dermatol., 17 (1951), 4. MICROCARD EDITIONS OF THE JOURNAL Vols. I to IX incl. are now available in microcard form. A complete set, a single volume or a single journal may be ordered from Iota Services, Ltd., 38, Farringdon Street, London, E.C.4. The current and future volumes of the Journal will also be available on microcards, in the year following that of publication.

BEHAVIOUR OF COSMETIC CREAMS, LOTIONS AND OILS ON THE SKIN cosmetic field. Only experimental physiological research on the living human skin can throw light on the problems arising out of the mechanism and effects of cosmetic preparations on the skin. This particular study on the spreading and creeping of fats and oils on the skin surface gives at least a partial answer to the question: "What happens to cosmetic creams, lotions and oils on the skin ?" They spread out over large areas in thin films which can hardly be seen or felt. This then creates the impression that the prepara- tions have disappeared into the skin. IReceived : 18th October 19581 REFERENCES Rothman, S. J. Soc. Cosmetic Chemists, 6 (1955), 3. Unna, E., and Frey, W. Dermatol. Wochschr., 88 (1929), 327. Butcher, E. O. J. Invest. Dermatol., 21 (1953), 1. Bernhardt, H., and Strauch, C. Z. klin. gged., 106 (1927), 671. Barall, L. C., and Pescatore, J. J., quoted from Rothman, S. -physiology and Bio- chemistry of the skin. (1954.) (University of Chicago Press, Chicago). Guillot, M., and Valette, G. Tech. pharm. (_Paris), 8 (1954), 9. Eller, J. J., and Wolff, S. Arch. Dermatol. and Syphilol., 40 (1939), 930. Rothman, S. Physiology and Biochemistry of the skin (1954). (University of Chicago Press, Chicago'. v. Czetsch-Lindenwald, H. Arch. Gewerbepathol. Gewerbehyg., 10 (194(), 1. Kligman, A. iV[., and Shelley, W. B. J. Invest. Dermatol., 30 (1958). 3. '•Vheatley, V. R. St. Bartholome•v's Hospital J., London, 55 (1953), 637. Jacobi, O. Kolloid-Z., 142 (1949), 2. Kleine-Natrop, H. E. Fette u Seifen, 55 (1953), 863. Sulzberger, M. B. J. Soc. Cosmetic Chemists, 6 (1955), 3. Jones, K. K., Spencer, M. C., and Sanchez, S. A. J. Invest. Dermatol., 17 (1951), 4. MICROCARD EDITIONS OF THE JOURNAL Vols. I to IX incl. are now available in microcard form. A complete set, a single volume or a single journal may be ordered from Iota Services, Ltd., 38, Farringdon Street, London, E.C.4. The current and future volumes of the Journal will also be available on microcards, in the year following that of publication.