Baseline

After 8 weeks

Observed effect

Paired t test p-value

Effect Size (ES)

Mean

(SD)

Mean

(SD)

Mean

(SD)

Total, n = 40

Pigmented spots

3.45

(0.93)

2.75

(0.54)

0.70

(0.82)

<0.0001

0.75

Rough complexion

3.20

(0.85)

2.55

(0.64)

0.65

(0.86)

<0.0001

0.76

Red complexion

2.70

(1.14)

2.23

(0.83)

0.48

(1.22)

0.0183

0.41

Wrinkle

3.15

(0.95)

2.60

(0.63)

0.55

(0.81)

0.0001

0.58

Obvious pores

3.48

(1.04)

2.70

(0.56)

0.78

(1.12)

<0.0001

0.75

30 - 50 years, n = 25

Pigmented spots

3.60

(0.91)

2.80

(0.50)

0.80

(0.82)

<0.0001

0.88

Rough complexion

3.28

(0.74)

2.68

(0.63)

0.60

(0.76)

0.0006

0.81

Red complexion

2.92

(1.12)

2.40

(0.82)

0.52

(1.08)

0.0247

0.46

Wrinkle

3.24

(1.05)

2.68

(0.56)

0.56

(0.87)

0.0037

0.53

Obvious pores

3.64

(0.91)

2.80

(0.50)

0.84

(0.90)

<0.0001

0.92

50 - 65 years, n = 15

Pigmented spots

3.20

(0.94)

2.67

(0.62)

0.53

(0.83)

0.0266

0.56

Rough complexion

3.07

(1.03)

2.33

(0.62)

0.73

(1.03)

0.0156

0.72

Red complexion

2.33

(1.11)

1.93

(0.80)

0.40

(1.45)

0.3047

0.36

Wrinkle

3.00

(0.76)

2.47

(0.74)

0.53

(0.74)

0.0148

0.70

Obvious pores

3.20

(1.21)

2.53

(0.64)

0.67

(1.45)

0.0961

0.55