Table 4.

Self-assessment of skin texture in per protocol analysis.

Variable	Intervention group (n = 36)				Control group (n = 38)
	6 week	12 week	Δ	Pa	6 week	12 week	Δ	Pa	Pb	Pc
Total score	35.22 ± 3.4	35.75 ± 3.6	0.53 ± 2.7	0.256	34.87 ± 4.1	35.45 ± 4.4	0.58 ± 4.8	0.461	0.748	0.719
Hydration	3.42 ± 0.6	3.50 ± 0.6	0.08 ± 0.6	0.373	3.37 ± 0.6	3.50 ± 0.7	0.13 ± 0.8	0.303	1.000	0.969
Smoothness	3.36 ± 0.5	3.53 ± 0.6	0.17 ± 0.6	0.083	3.34 ± 0.7	3.53 ± 0.7	0.18 ± 0.8	0.147	0.992	0.911
Roughness	3.28 ± 0.6	3.47 ± 0.7	0.19 ± 0.6	0.070	3.42 ± 0.6	3.47 ± 0.7	0.05 ± 0.9	0.711	0.993	0.959
Glowing	3.36 ± 0.5	3.36 ± 0.5	0.00 ± 0.5	1.000	3.26 ± 0.7	3.32 ± 0.7	0.05 ± 0.7	0.644	0.766	0.843
Elasticity	3.39 ± 0.6	3.36 ± 0.5	−0.03 ± 0.5	0.744	3.34 ± 0.6	3.32 ± 0.7	−0.03 ± 0.8	0.845	0.749	0.756
Wrinkles	3.31 ± 0.5	3.25 ± 0.4	−0.06 ± 0.5	0.487	3.16 ± 0.5	3.29 ± 0.6	0.13 ± 0.6	0.169	0.739	0.914
Itching	2.97 ± 0.3	2.97 ± 0.6	0.00 ± 0.6	1.000	2.97 ± 0.4	2.97 ± 0.6	0.00 ± 0.8	1.000	0.992	0.923
Aching	3.00 ± 0.0	3.00 ± 0.0	0.00 ± 0.0	–	3.00 ± 0.4	2.95 ± 0.4	−0.05 ± 0.6	0.571	0.422	0.382
Burning	2.94 ± 0.3	3.00 ± 0.2	0.06 ± 0.2	0.160	3.00 ± 0.4	3.03 ± 0.4	0.03 ± 0.6	0.785	0.746	0.827
Stinging	2.97 ± 0.4	3.00 ± 0.4	0.03 ± 0.3	0.571	2.89 ± 0.3	2.92 ± 0.4	0.03 ± 0.5	0.734	0.383	0.366
Tightness	3.22 ± 0.6	3.31 ± 0.5	0.08 ± 0.4	0.263	3.11 ± 0.5	3.16 ± 0.6	0.05 ± 0.6	0.600	0.282	0.300

Values are presented as mean ± SD.

^aPaired t-test.

^bTwo-sample t-test comparing the change between 6 and 12 weeks.

^cRepeated measures ANCOVA (adjusted for temperature, humidity and ultraviolet A).