I have suggestion, if possible held a Mega Test for all products and combo:
With Various Age, Amount, Application area and Nationality.
Men:
A. Use nothing
B. SOE
C. NPA
D. PI
E. Edge
F. JB1
G. JB2
H. JB3
I. Etc

Women:
1. Use nothing
2. Edge
3. NPA
4. Attraction
5.....
ETC

And look/record the result.
And then rotate the Man/Woman, and investigate/record again
Including The result of M to M and W to W