I use nivea's face scrub twice a week. Cant remember what it's called. I think the name
has changed a few times. It's now called either Enegizing or Revitalizing. Really smooths the skin. The other days I use nivea's moisturizing face wash.
I use a clear glycerine based soap as a pre-shave prep wash and lately I have been using Neutrogena (just because I came across 3 bars of it hidden away).
Supposedly around 30 you should be using AHA products on your skin daily, ZIRH Clean and MenScience Microfine facial scrub both have AHA in them and it is what i mainly use.
I like Neutrogena's face clearing wash, plus it's cheap. Use it almost daily, but once a week I use Jack Black Face Buff. Really gets in there and gets the grime off. Use a lot when I'm growing the beard out.
Don't use anything. I face lather and that cleans my face as well as softening the beard and just use left over lather to clean the rest of my face. Never have any problems.