The most important product every guy with a beard should use

Maintaining your beard growth is no easy task.

It takes work to keep it looking good and healthy. You already know that it requires some trimming.

Now comes the next step: beard oil.

Never heard of it? Fear not, it is quite simple to use and inexpensive to procure.

But first, let's go over why you need it.

Just like the hair on your head needs moisturizer in the form of a conditioner, so does the hair on your face.

Beard oil, however, moisturizes not only the beard hair, but the hard-to-reach skin underneath. This will prevent the dreaded itchy beard dandruff, Dove Men hair expert Jason Schneidman told the Huffington Post, which is caused when beard hairs wick away moisture from the skin.

Beard oil doubles as a styling agent, just as you would put styling cream in your hair, leaving it softer to the touch and easily manageable. It will also body to your beard, helping covering up any balder spots you might have, and make it smell nice - as if you were wearing a natural cologne.

Convinced? Great. To put it on it, remember that a little goes a long way and a small amount will work well. Smooth it into your beard after you take a shower or wash your face (or both), making sure to get an even coat. Start down at the skin, working your way up through the hair. This should be done daily. A comb can work well for longer beards.

As for which one you should buy, they all do essentially the same thing with different scents, using slightly different combinations of oils. Some of the most trusted brands include Beardbrand ($15), Artnaturals ($13), and Prospector Co. ($28)