L

a

b

ΔE

Phenolated glycerin technique

37.74 ± 0.1

5.20 ± 0.01

6.36 ± 0.11

42.13 ± 0.12

Alcohol propylene glycol technique

41.46 ± 0.16

3.13 ± 0.04

14.38 ± 0.11

37.03 ± 0.17

Natural organ

41.27 ± 1.5

11.85 ± 0.71

7.75 ± 0.46

39.7 ± 1.51