This is the topic of debate on today's Perfect Hero post. Do you write men with whiskers or must the cheek the heroine gets to nuzzle be velvety-smooth?
I have plenty of time in my erotic romance life for both. Perhaps I might not go for the full Santa Claus, but a well-trimmed beard on the right face can work wonders (and add some interesting sensations, let's say...). The Sheriff of Nottingham gets it right, plus he probably shaves with a Spanish steel dagger for extra machismo points.
I tend to steer clear of moustaches, mainly because you just don't seem them around so often - unless my hero is Victorian, in which case he will have a fine set of whiskers and a shaving brush.
My favourite, though, especially for an angsty scene, is the good old unshaven stubbly look. It might lead to an unsightly rash after the curtain-dropping kiss, but it certainly works that rugged charm a treat.
Which facial hairstyle do you favour?