LANOLIN DERIVATIVES IN SHAMPOOS 781 .... :• ................ "•'"•:•i?•i, *'•ß'• ......... '•:-* '•ß '•' - .... . ,**.•' ß•X•. '• % •.•:•..• .?• Figure 1. Preparation of rumple containers for specific foam volume determination. Foam drainage test in progress :: .•• %-.:.'..*•'•':'.,.:.:......-.....-.,•½•:,:I••..},':••..........•-..to-."'-'................•'.•.•'........:..'.•½--'••..•••..,:"...•':..:•,"' •,•. =.•' •:-. •?.'a S...) . . : ..a '•'"' ½"' '- •. ?:.'• :7 •.• •' ,•,-'--':? f':a 7%... •,... :• .... :• •.,8 •' •...'...','. :: '.: .... . .½. %? ,•, •- .... , .... -.• % •½ ..... ,,.: . ..h ..... .... , - =....: ...• .- -- •. ß •. "-} ? . :, .... ß - .. .., ---.. .... --- :' "'*'"' * c:.::-: :f •,*, ß .... ..::?,•..... .... . g. -': : . .•.......... '/' .. .•. .:: ß ß . ß.. . ....... ..•.. . .. ..... ,,,, .... •. : ....... ,,., .......... . -,-?,-,.:...•, •..-' Figure 2. Apparatus for foam generation, drainage, and specific foam volume tests
782 JOURNAL OF THE SOCIETY OF COSMETIC CHEMISTS a
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