I think shampooing is must ya know or at least general cleanising. Stating the obvious I know but there some good products that specifically can help with the shaved look. Ingredient such tea tree, aloe vera and zinc are quite beneficial if applied to your head I use the latter in either Head&shoulders shampoo or the ZNP bar which have a good anti bacterial effect.
I've used tea tree shampoos and bars before and admittedly didn't really notice much but that was just for me. Anywhoo ingredients like tea tree are much better when applied from topical lotions so you should just look for a good deep cleansing shampoos or bar. Other than Head&Shoulder, Men-U do a good scalp shampoo and there's the Bald Guys Wash but like Headblades, Headwash I found it a tad too gentle.