hirsute men responces are welcome.

Or their wives, I hope! My husband has got "dirty blond" hair and his beard is red, with blond parts near his lips. Since his current hairstyle is "apply electric clippers until hair is an even length", and he was wearing sideburns till recently (I just love them!) and I'm the one who gets to do the clipper-ing, I can tell you that the sideburn hair starts just in front of his ears - kind of where a woman's hair ends. It's definitely thicker and coarser than his head hair, which is quite fine and soft. In his case, it's also a completely different colour. Also, I am not "allowed" to do his sideburns - apparently there's more art to it than I am capable of (fine by me!). I just trim his head. My job ends where his sideburns start.