Table 2.

Colorimetric changes of melasma from baseline to week 12 for the two studied groups (P.P. population)–Comparison before/after on lesional area

	ITA°
	CCP group			HQ group
	Mean ±SEM	Change from baseline	∆% on the mean	Mean ±SEM	Change from baseline	∆% on the mean
Baseline	−22.27 (±3.82)	–		−21.37 (±3.66)	–
Week 6	−16.52 (±3.32)	5.75 (±1.44)	+26%	−10.58 (±3.06)	10.79 (±2.00)	+50%
Week 12	−10.95 (±3.10)	11.32 (±1.56)	+51%	−6.21 (±2.81)	15.16 (±1.93)	+71%

All changes were statistically significant P < 0.005. CCP, cosmetic product combination; HQ, hydroquinone; ITA°, Individual Typological Angle.