Detroit Grooming does offer shampoo just for your beard which works out great for me since I shave the rest of my head. Lots of people don't think to shampoo their beard. It's hair, it still needs to be clean. In addition to that they also offer beard oil. Beard oil moisturizes the hair and the skin underneath. It helps keep the beard soft and smelling nice. I've been using the Corktown oil for three months now and it's made a noticeable difference in the look and feel of my beard.
If you're looking for the opposite of growing beards Detroit Grooming has a large number of shaving goods. They carry safety razors and straight razors. I haven't gotten brave enough to shave my head with a safety razor, but that day may come. It isn't just the razors though, they have all sorts of brushes, creams, gels, etc. Check out Detroit Grooming. If you've just been grabbing the cheapest thing you can find in the Target aisle the price will surprise you a little, but the extra quality is worth it. There are a number of grooming kits that will get you started.