I have been using the 1.5 roller once a week. I use rogaine foam in morning and evening. I apply moderate pressure and usually have lots of pin size blood spots and red scalp. The downside is my scalp is very dry and uncomfortable while rolling. I am seeing new hair growth in crown area and on top of scalp, nothing in temple areas yet. I am curious if others are experiencing any luck. I have used rogaine for years with little success other than hopefully slowing down hair loss, the roller with rogaine seems to be causing some results. Like I said this is 4-5 week mark and new hairs are about a 1/8” inch and bald spot on crown getting smaller. I did take some pics alone way and will keep taking every few weeks.