Hey guys, I bought a four month supply of rogaine a couple of years ago and never used it because i wanted to see if finasteride worked for me first. I just recently found it in my closet and none of the bottles have been opened or anything, but it says there is an expiration date of 07/06. Do you think this means that the minoxidil wont work or will be harmful to use in any way after this date? i was planning on using it starting in june, but now am hesitant...