CATIONIC CONDITIONING COMPOUNDS 73 A = unextended B -- random scale lifting C -- common scale lifting D -- extreme scale lifting E = fiber failure 70 •i • •' 70 60 60 i . • 2o 2o '• lO •_to o •0 H'i'•i•' ( ) • 2'• A scal•Li"inO pheno•enøn A = unexten•d B = random scale lifting C = common s•e lifting D = extreme s•e lifting E • fi•r failure --• t- .." "'•": :•- :•• ••• ß :-•-s0 o " -30 • . 1o to (::) •, ' I'•,•-•'•.,mim•-- - • •'" '•'•'•1 •.." o• k ,•' I-"•l•.•,•'• "- •....,•,,•1 ' r• • • • A E• phenomenon Hair Fiber (#) Lifting b scale Figure 8. Distribution of random, common, and extreme scale lifting observed as a mechanism of stress release of the cuticula during extension of hair fibers exposed to (a) single and (b) multiple applications of HPG.

74 JOURNAL OF COSMETIC SCIENCE A = unextended B = random scale lifting C = common scale lifting D = extreme scale lifting E = fiber failure 60 : ' ' '":' • "'• '= •' 70 i! 50 40 71 , 30 ß 10-' -J. ... 10 0 '•'•i ' '" 0 -.•- . 1ø}e•7 E •air • • 1 A B C D Scale Lifting phenomenon A = unextended B = random scale lifting C = common some lifting D = extreme scMe lifting E= fi•r f•lure . 80• ' : t..•.' 70 - :: :• 80 60 . 50 : ' - 30 ' ' 40 m ' .. 20 ' 30 •0 . 20 0 Scale LiRing phenomenon 40 • ,,.., 30 o= 20 • Figure 9. Distribution of random, common, and extreme scale lifting observed as a mechanism of stress release of the cuticula during extension of hair fibers exposed to (a) single and (b) multiple applications of the monomeric CETAB.