Here's a set of Photoshop brushes that includes a stubble brush-I haven't tried it, myself...

keepwaiting.deviantart.com/art/Skin-Care-v2-Photoshop-Brushes-125078539

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The Wisdom of bagginsbill:

"Oh - the manual says that? I have never read the manual - this must be why."
“I could buy better software, but then I'd have to be an artist and what's the point of that?"
"The [R'osity Forum Search] 'Default' label should actually say 'Don't Find What I'm Looking For'".
bagginsbill's Free Stuff... https://web.archive.org/web/20201010171535/https://sites.google.com/site/bagginsbill/Home