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Table 3 Development of black bean hair coloring gel

From: Alternative application approach on black bean: hair coloring product

Physicochemical propertiesBlack bean hair coloring gel
A8A10A12
Initial
 pH5.00 ± 0.015.10 ± 0.015.00 ± 0.01
 Viscosity (cps)111,333.33 ± 0.0287,366.67 ± 4845.2174,800.00 ± 1200.00
 L*33.76 ± 0.0233.25 ± 0.0733.55 ± 0.02
 a*0.09 ± 0.020.06 ± 0.000.07 ± 0.01
 b*− 0.38 ± 0.02− 0.45 ± 0.01− 0.38 ± 0.01
 h*283.31 ± 2.30277.54 ± 0.47279.80 ± 0.23
 Visual observed colorBrownish redBrownish redBrownish red
 Precipitation/separationNoneNoneNone
Accelerated stability test
 pH4.47 ± 0.014.38 ± 0.004.43 ± 0.01
 Viscosity (cps)119,666.67 ± 5686.2498,066.67 ± 8533.0783,733.33 ± 4772.14
 L*31.21 ± 0.0530.36 ± 0.0131.31 ± 0.05
 a*0.50 ± 0.060.09 ± 0.020.12 ± 0.01
 b*− 0.38 ± 0.10− 1.36 ± 0.08− 0.44 ± 0.77
 h*323.48 ± 4.13273.63 ± 1.06285.14 ± 1.61
 ΔE2.60 ± 0.062.96 ± 0.032.25 ± 0.04
 Visual observed colorBrownish redBrownish redBrownish red
 Precipitation/separationNoneNoneNone