EFFECT OF COCONUT OIL ON HAIR DAMAGE 183 Table III Pair-Wise Comparison Data for Treatment Effects for Protein Loss (t-values at 95% confidence level) Treatment Straight Wavy Curly Permed without MO (MO as post-wash) 0.452 -- 0.106 -- without CNO (CNO as 1.779 -- -- without SFO (SFO as post-wash) -- -- -- 0.461 without MO (MO as pre-wash) -- 0.431 -- 0.103 without CNO (CNO as 1.814 -- -- without SFO (SFO as pre-wash) -- -- 0.515 -- water--with and without MO 0.507 1.312 -- water--with and without CNO -- -- 1.762 water--with and without SFO -- 1.108 -- -- water--with and without MO -- 0.484 -- 0.354 water--with and without CNO 1.738 -- water--with and without SFO Undamaged--with and Undamaged--with and post-wash) Undamaged--with and Undamaged--with and Undamaged--with and pre-wash) Undamaged--with and Treatment with boiling (MO as post-wash) Treatment with boiling (CNO as post-wash) Treatment with boiling (SFO as post-wash) Treatment with boiling (MO as pre-wash) Treatment with boiling (CNO as pre-wash) Treatment with boiling (SFO as pre-wash) Treatment with bleaching agent--with and without MO (MO as post-wash) Treatment with bleaching agent--with and without CNO (CNO as post-wash) Treatment with bleaching agent--with and without SFO (SFO as post-wash) Treatment with bleaching agent--with and without MO (MO as pre-wash) Treatment with bleaching agent--with and without CNO (CNO as pre-wash) Treatment with bleaching agent--with and without SFO (SFO as pre-wash) Exposure to UV light--with and without MO (MO as post-wash) Exposure to UV light--with and without CNO (CNO as post-wash) Exposure to UV light--with and without SFO (SFO as post-wash) Exposure to UV light--with and without MO (MO as pre-wash) Exposure to UV light--with and without CNO (CNO as pre-wash) Exposure to UV light--with and without SFO (SFO as pre-wash) 1.565 0.139 1.588 0.345 0.684 0.210 0.345 0.265 0.092 0.583 2.012 0.098 1.850 1.728 0.407 1.780 0.087 t theoretical for 48 degrees of freedom at 95% confidence level = 1.645. comb for each side). After each of the ten combing strokes, both the hair and the comb were dipped in 200 ml of distilled water to recover broken cuticle debris. A total of 100 strokes (50 on each side) were applied. The suspension with cuticle debris was used for protein estimation. Analytical controls were run in the form of determination of the

184 JOURNAL OF COSMETIC SCIENCE Table IV Analysis of Variance Data for Treatment Effects for Protein Loss Hair type Source of Degrees of Sum of Mean F-Value at 95% variance freedom squares square confidence level Undamaged Oil type MO (straight, curly) Undamaged Oil type MO (wavy, permed) Undamaged Oil type CNO (straight, wavy) Undamaged Oil type SFO (curly, permed) Boiled Oil type MO (straight, curly) Boiled Oil type MO (wavy, permed) Boiled Oil type SFO (straight, wavy) Boiled Oil type CNO (curly, permed) Bleached Oil type MO (straight, curly) Bleached Oil type MO (wavy, permed) Bleached Oil type SFO (wavy, straight) Bleached Oil type CNO (curly, permed) UV-Treated Oil type MO (wavy, permed) UV-Treated Oil type MO (curly, straight) UV-Treated Oil type SFO (wavy, straight) UV-Treated Oil type CNO (curly, permed) Between treatments Experimental error Between treatments Experimental error Between treatments Experimental error Between treatments Experimental error Between treatments Experimental error Between treatments Experimental error Between treatments Experimental error Between treatments Experimental error Between treatments Experimental error Between treatments Experimental error Between treatments Experimental error Between treatments Experimental error Between treatments Experimental error Between treatments Experimental error Between treatments Experimental error Between treatments Experimental error 2 22.2 11.1 5.3 2 4.2 2.1 2 12.4 6.2 1.7 2 7.2 3.6 2 92.8 46.4 46.4 2 2.0 1.0 2 80.0 40.0 8.0 2 10.0 5.0 2 32.4 16.2 7.1 2 4.6 2.3 2 16.9 8.5 2.6 2 6.5 3.3 2 20.4 10.2 5.6 2 3.6 1.8 2 34.8 17.4 24.8 2 1.4 0.7 2 4.2 2.1 1.0 2 4.2 2.1 2 12.5 6.8 1.2 2 11.5 5.8 2 38.0 19.0 5.0 2 7.8 3.9 2 43.0 21.5 19.5 2 2.2 1.1 2 15.4 7.7 2.0 2 7.6 3.8 2 22.2 11.1 6.5 2 2.3 1.7 2 10.4 5.2 4.7 2 2.1 1.1 2 44.6 22.3 37.2 2 1.2 0.6 F theoretical for (2.2) degrees of freedom at 95% confidence level = 19.0. residue of oil on the scalp of the client after rinsing, and only after ensuring zero residue, the rinsings were collected in the manner mentioned above. The outcome of these experiments was analyzed statistically (taking into account the mean and the standard deviation of the number of replicates for the significance of the treatment effects within the confidence limits). See Table II for analysis of variance (ANOVA) data.