1 week on Rogaine

I have made 1 week on the minoxidil.  The itching has stopped almost completely.  It does make my hair really dirty fast.  But I do notice that I have little tiny hairs already growing.  I know its been only a week, but I dont think those hairs were there before.  I really think my hair is growing a lot faster than it did the last time.  I would still continue the folligen, but I cant because I want to color my hair within the next couple of weeks.