B 0.0 2006 TRI/PRINCETON CONFERENCE 20.0 Moisture in hair Secondary transpiration moisture 40.0 Heating time (min.) 60.0 439 80.0 Figure 2. Illustration of transpiration moisture. Secondary transpiration moisture(%) (dry base) = (A-B)/B X 100. RESULTS AND DISCUSSION GLOSSING EFFECT As shown in Figure 3, Siliconized HSP was superior to give gloss on hair to dimethicone or amodimethicone. SUBSTANTIVITY (MEASURED WITH ICP) Quantitative analysis for silicon of siliconized HPS adsorbed to hair showed that the substantivity of siliconized HPS to hair was twice as much as dimethicone (Figure 4). This result suggested siliconized HPS was adsorbed more than dimethicone to damaged hair which has hydrophilic protein part. SUBSTANTIVITY (MEASURED WITH EDS) Figure 5 shows SEM photo and distribution map of Si. The result indicated Si in the hair 60 55 g +-' 50 ·u 45 0 40 0 ·-g 35 30 �-----__J"' Control Siliconized HPS Dime1hicone Amodimethicone (6000cs) Figure 3. Illustration of transpiration moisture.

440 JOURNAL OF COSMETIC SCIENCE 5.0 0.0 non-treatment Siliconized HPS Dimethicone Figure 4. Results of quantitative analysis for silicon of siliconized HPS adsorbed to hair. Cross section picture by SEM Control Mapping by EDS Cross section picture by SEM Silicnized HPS Figure 5. Cross section picture and mapping picture. � 5.0 1] -� 4.0 a 3.0 12.0 � 1.0 � � 0.0 8 Q) CJ) Control Siliconized HPS * Dimethicone Mapping by EDS Figure 6. Comparison of secondary transpiration moisture content. *p 0.01 (paired t-test). conditioner contained siliconized HPS was especially adsorbed on cuticle edge that is easily damaged causing to be hydrophilic by bleaching. MEASUREMENT OF MOISTURIZING EFFECT As shown in Figure 6, the highest secondary transpiration moisture content was the hair treated with siliconized HPS treatment cream. This fact suggested that the increased moisture was carried by the hydrolyzed silk protein and quasi-obstruent film made by alkyl and silicone chain functioned to lock the moisture inside of the hair. And the film prevented hair from loosing water even at 65 ° C. Siliconized HPS was effective enough