A short beard is very similar to stubble but with a few key differences. If your facial hair length is less than 5mm, it technically falls into the category of stubble. Stubble is generally less full, with hairs that remain closer to the face.  Some people are opposed to stubble because the short length means that it is often scratchy or itchy. Many don’t prefer the aesthetic of a less full beard, especially if you don’t have an even growth pattern.  For others, a stubble look is a perfect balance between a beard and a clean-shaven face.