Need suggestions for healthy scalp (Sebum)

[Mane Man]

I have decided that Propecia and Rogaine are not for me. I'm 35 and happily married and have been buzzing my hair down to a 1a for over a year and am fine with the look. That said, I'd like to use a good shampoo for overall scalp health that is least likely to cause damage to the hair I still have. I've been using Nizoral for about a year, and wanted to know if there is anything that might be better. Sometimes if I run my hand through my locks (I mean fuzz), I feel little bumps that I think might be sebum. Please let me know if there is something I can do to help with this. Thanks!

[Mane Man]

I'll still take replies, but I decided to try the Hair Cycle Shampoo. Looks like decent stuff. Santa can give me a healthier scalp for Christmas!