Sample

Number of subjects

Time of duration (h)

Number of subjects in each visual assessment score

0 grading

1 grading

2 grading

3 grading

4 grading

Vitamin C lotion (VCL)

34

0.5

34

0

0

0

0

24

34

0

0

0

0

48

34

0

0

0

0

Blank control group

34

0.5

34

0

0

0

0

24

34

0

0

0

0

48

34

0

0

0

0