Why not compound the new 12.5% Minoxidil Solution without any propylene glycol?
A. Alcohol based minoxidil solutions with a concentration of 5% or more minoxidil require propylene glycol or glycerin or other such vehicles in the base to remain stable. Because it is so viscous, even a small amount of glycerin in a minoxidil solution will result in the solution having a bit of a “greasy feeling.