584 JOURNAL OF THE SOCIETY OF COSMETIC CHEMISTS I B 0 ß • R I I I .7 .IS .5 .4 .3 .2 .::1 R$//L ß il 0" 10 ø 20 ø 30" 40 ø 50 ø 60 ø 70 ø Figure 9. GP curves obtained from black Navajo hair, 6•6s REL, and RER, unsprayed (solid lines) and sprayed (dashed and dotted lines, no of resin equals 1.503) 21 fibers (3 equals 30 ø, 1 ø slits, T equals 0.276 (unsprayed), T equals 0.138 (sprayed), wide strung, average diameter of fibers = 94/xm. Each fiber is almost completely sheathed with resin after spraying with solution of resin. Peak values for EAP Peaks would be 1.3 Vs if plotted on same scale as curves for unsprayed fibers. Note absence of far side peaks because of color and diameter of fibers

OPTICAL PROPERTIES OF HAIR 585 --1. I_ .I 0 --,9 -- ,E• -- .7 .IS .5 llll lllll IIII illlilt I I I I I I I I I i I I I I I I t , I I I R 0 ø 10 ø 20 ø 30 ø 40 ø 50" ISO ø 70 ø Figure 10. GP curves obtained from black Navajo hair, es%, REL, and RER, unsprayed (solid lines) and sprayed (dashed and dotted lines, no of resin equals 1.503), 21 fibers, 4) equals 30 ø, 1 ø slits, T equals 1 (no filter), wide strung, average diameter of fibers equals 94Fm. Each fiber is almost completely sheathed with resin after spraying with solution of resin. In curves for unsprayed fibers, far side peaks appear weakly