Restarting Rogaine foam several years after its effectiveness wore off

[PersonalizedUsername]

Hi all, hoping to get your thoughts on the following:

I had a good run with Rogaine foam for about five years then results began to diminish until at last I decided it was no longer doing much of anything. I began using it less and less and finally stopped altogether about two year or three years ago.

I remember reading that the effectiveness of hair loss treatments wear off over time as the body becomes naturally resistant to them. Is that the case? And does this resistance remain in the body even though you haven't used the treatment in several years?

Has anyone stopped using Rogaine (or any other hairloss treatment) after the effects wore off, then restarted and found they worked again?

Interested to hear your experiences. Thanks!