SCANNING ELECTRON MICROSCOPIC TECHNIQUES 619 Figure 8. Damage category--split end Figure 9. Damage category-general shaft damage
620 JOURNAL OF THE SOCIETY OF COSMETIC CHEMIST$ Figure 10. Micrograph of general shaft damage before treatment with conditioning formulation Table II Difference Ratio (DR) Values Conditioner • Shampoo • Total number of panelists 50 15 Total number of hairs evaluated 192 59 Total number of damage sites evaluated 442 127 Average difference ratio calculated 0.26 0.47 DR range per panelist 0.03--0.66 0.28-0.71 "Shampoo and leave-on conditioner supplied by the Mennen Co., Morristown, N.J. Both products are protein formulations.
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