606 JOURNAL OF THE SOCIETY OF COSMETIC CHEMISTS Table XVII Foam Volumes (ml) of Two Commercial Products (Tap Water) Foaming Skin Cleanser 1% Powdered Bubble Bath Initial 850 2 min 660 5 min 650 1.0% 0.5% 0.2% 780 550 455 640 410 280 610 380 260 Initial 2 min 5 min Table XVIII Bubble Bath Formulation and Foam Data Formulation Sodium suloeate 78 Sodium alkyl suloeoacetate (70%) 20 Laurie myristic diethanolamide 2 Foam Volume (ml), Tap Water 1.0% 0.5% 0.2% 800 680 580 640 540 435 600 500 370 formulation are at least as good as those of the commercial product, shown in the previous table. Earlier, the point had been made that one of the important requirements for an apparatus to measure foam was that the data be meaningful. It is impor- tant to note a statement in the paper by Sorkin et al. (6) in describing the evaluation of foam in shampoos by the glass-stoppered revolving cylinder, "It is fast, it is reproducible and it reflects the performance of the shampoo on the hair." CONCLUSION An apparatus for measuring foam has been described which meets several important criteria. Data have been presented which show differences in foam volumes, among different surfactants, and using different conditions. Some commercial foaming cosmetic products were evaluated and suggested start- ing formulations are presented for some high-foaming cosmetic products. (Received April 4, 1974)

FORMULATING HIGH-FOAMING COSMETIC PRODUCTS 607 i•EFERENCES (1) Standard Test Method for Foaming Properties of Surface Active Agents, ASTM Dl173-53. (g) Alexander, P., Bubble baths, Mfg. Chem. Aerosol News, 36, 41 (Feb. 1965). (3) Myddleton, W. W., The evaluation of a shampoo, J. Soc. Cosmet. Chem., 4, 150-6 (1953). (4) Neu, G. E., Techniques of foam measurement, Ibid., 11, 390-414 (1960.) (5) Bromley, J. M., Modern trends in the assessment of shampoos, Ibid., 15, 631-9 (1964). (6) Sorkin, M., Shapiro, B., and Kass, G. S., The praetieal evaluation of shampoos, Ibid., 17, 539-51 (1966). (7) Bacon, L. t1., Foam generation method for evaluating biodegradability, J. Amer. Oil Chem. Soc., 43, 18-9.5 (1966). (8) Barnett, G., and Powers, D. H., Faetors eontributing to the perfonnanee of sham- poos and to eonsumer acceptance, Froc. Sci. Sect. Toilet Goods Ass., 24, 9.4-8 (Dee. 1955).