What with all the recent interest in "hair effects," I wanted to share this simple technique to create a "beard stubble (been-out-in-the-field-for-a-couple-of-days-now-and-can't-remember-where-I-left-my-Gillette-Mach3)" effect, that has worked for me:
1. drybrush on a few layers of clear matte (basecoat)
2. LIGHTLY drybrush on a darker shade of the haircolor you want (brown for blondes; dark brown for redheads; black for brown haired, etc.)
3. VERY LIGHTLY drybrush the highlights
4. seal it, and you're done!