HeadBlade is great but don't rush it because you can cut yourself with it badly when you become overconfident (like myself)
There's a lot more surface area to shave, so blades don't last as long as they would if you were just shaving your beard. Others on the Forum have advice on how to prolong the life of the razor blades. My trick is to rinse the blade well and dry it off with a towel rather than let it air dry. Seems to help.