Is minoxidil foam less effective than minoxidil liquid?

I prefer the foam Minoxidil over the liquid because they removed a preservative chemical that is used in the liquid that often causes topical scalp symptoms like irritation, redness and flaking. The foam does need to be messaged into the scalp a little more because it does not get to scalp as easily as the liquid. 

Thank you for your question. I suggest you work closely with a board certified facial plastic surgeon to develop a hair regrowth treatment plan. You may be an ideal candidate for NeoGraft Hair Restoration, which can provide natural hair regrowth in a short recovery period. Always work with a boar certified facial plastic surgeon.
Best wishes,

Minoxidil was first brought to market as Rogaine over 30 years ago.  Its hard to believe that the same treatment is still available today, even though it is now very inexpensive and widely available.  If it really worked that well, why is everyone still going bald?
Interestingly when Rogaine was launched the company didn't even know how it worked.  They found that some fuzzy hairs grew as a side effect of the medicines' primary use as a vasodilator and incorrectly assumed that minoxidil was growing hair because it was taking more blood supply to the scalp.
However if you think about it and realize that if you have something inside your body in your bloodstream that is causing hair loss, like DHT perhaps, then taking more blood to the problem area long term is going to do the opposite of help.  This is why for some people Rogaine doesn't work at all, for others it makes it worse and for those it does help it is only for a short period of time (up to a couple of years).What they later found is that besides being a vasodilator Minoxidil also is a mild hair growth stimulant. So if that's what you are looking for, perhaps you should instead find a program with a strong hair growth stimulant that isn't also a vasodilator. And even better, pair it with something that is stopping the underlying cause or causes.
What you really need to do is find a Doctor who can perform a comprehensive specialized set of labs to understand all the different factors impacting your hair loss from nutrition and lifestyle to genetic factors.