Yeah, I used revivogen whilst on Regaine. I used Regaine in the am and Revivogen in the pm. Revivogen did smell, but it wasn't unpleasant. It is also an orangy colour and, if you're not careful and don't massage it in properley, you'll be walking around with an orange halo! I stopped using it because it burnt my scalp. Before you ask, no I didn't mix it with Regaine. I think maybe it was because it was one of the last applications in the bottle and I hadn't been shaking it throughout usage. My scalp dried up and flaked big time, and I had terrible irritations. Hence I stopped using it and bought some Nizoral to try and repair my scalp somwhat.