Bleaching Process Investigation of Tunisian Dromedary Hair

Table 3

Effect of rinsing after bleaching on the degree of whiteness and yellowness index of bleaching dromedary hair for 30 min bleaching times with H₂O₂ concentration equals 6 g/L.

Rinsing after bleaching	Degree of whiteness^a	Yellowness index^b	Tenacity cN/tex^c
Untreated	51.05±1.2	36.15±0.9	18.18±1.8
Pure water	69.19±0.7	43.05±0.6	13.47±2.5
Oxalic acid	78.48±1.1	23.76±1.0	14.12±2.7

aAs per ASTM E-313; mean value of 3 samples ± standard deviation, each sample having 8 measurements. ^bAs per ASTM D-1925; mean value of 3 samples ± standard deviation, each sample having 8 measurements. ^cAs per NF G 07 307; mean value of 3 samples ± standard deviation, each sample having 10 measurements.