Are higher strength Rogaine formulas better than lower strength ones?

A: To a degree, Rogaine response is dosage dependent. For example, 5% Rogaine (minoxidil) generally grows more hair than 2%. But you can also apply 2% more liberally, or more frequently, and deliver a comparable daily dosage of minoxidil. While more minoxidil sometimes helps, beyond a certain threshold, additional minoxidil makes little if any difference.