Table 1: The 25th Percentile, Median (Med) and 75th Percentile Values for L*, a* and b* of 21 Subjects

L* a* b*
25% Med 75% 25% Med 75% 25% Med 75%
Baseline 67.8 69.8 70.3 -0.18 0.04 0.30 6.34 7.54 8.90
After LED 69.3 70.7 71.4 -0.15 0.06 0.31 5.36 6.64 7.93
After 14 days 67.7 69.1 69.7 -0.35 -0.16 0.19 5.44 6.41 8.08