From: Alternative application approach on black bean: hair coloring product
Ingredients (% w/w) | Formula | ||
---|---|---|---|
A | B | C | |
DI water | ↑ | ↑ | ↑ |
Ethanol | 66.32 | 66.32 | 66.32 |
Propylene glycol | ↓ | ↓ | ↓ |
Vitamin E acetate | 0.04 | 0.04 | 0.04 |
Disodium EDTA | ↑ | ↑ | ↑ |
Purple spirit | 1.04 | 1.04 | 1.04 |
Triethanolamine | ↓ | ↓ | ↓ |
Carbomer | 0.50 | 0.50 | 0.50 |
Xanthan gum | 0.30 | – | – |
HEC | – | 0.30 | – |
HPMC | – | – | 0.30 |
Phenoxyethanol/ethylhexylglycerin | 1.00 | 1.00 | 1.00 |
Initial | |||
pH | 4.97 ± 0.02 | 4.97 ± 0.01 | 4.97 ± 0.02 |
Viscosity (cps) | 123,000.00 ± 13,228.76 | 304,333.33 ± 12,423.10 | 410,666.67 ± 30,022.21 |
L* | 37.24 ± 0.01 | 35.76 ± 0.01 | 34.71 ± 0.01 |
a* | − 0.10 ± 0.01 | 0.06 ± 0.02 | 0.04 ± 0.01 |
b* | 0.42 ± 0.01 | − 0.47 ± 0.01 | − 0.28 ± 0.01 |
h* | 103.36 ± 1.03 | 276.98 ± 2.15 | 277.45 ± 0.15 |
Visual observed color | Clear light yellow gel | Opaque colorless gel | Opaque colorless gel |
Precipitation/separation | None | None | None |
Accelerated stability test | |||
pH | 4.87 ± 0.01 | 4.84 ± 0.01 | 4.80 ± 0.03 |
Viscosity (cps) | 357,333.00 ± 17,243.00 | 584,333.00 ± 16,258.00 | 575,000.00 ± 9643.00 |
L* | 33.25 ± 0.02 | 31.96 ± 0.02 | 31.59 ± 0.28 |
a* | − 0.02 ± 0.03 | − 0.03 ± 0.06 | − 1.08 ± 0.52 |
b* | 0.37 ± 0.01 | − 0.51 ± 0.01 | − 0.54 ± 0.42 |
h* | 92.78 ± 3.83 | 266.41 ± 6.34 | 203.61 ± 13.24 |
ΔE | 3.99 ± 0.03 | 3.81 ± 0.02 | 3.36 ± 0.42 |
Visual observed color | Clear light yellow gel | Opaque colorless gel | Opaque colorless gel |
Precipitation/separation | None | None | None |