Here is how i did it :
5% kirkland minoxidil :
ppg 50%=30 mL
alcohol 30%=18 mL
water 15%=9 mL
minoxidil 5%=3 mL
I pour out 36 mL which leaves me with 24 mL of solution . 5% of that 24 mL is minoxidil so i have 1.2 mL of minoxidil . now i add 36 mL of alcohol so i have a 60 mL bottle of new solution with...