I have an early 30s hairstyle but flyaway hair the first few days after shampooing, so I tend not to wash more than 1-2 times a week, as I want my hair to lay flatter against my head. I spritz flexible hold hairspray into my hair, and while still wet, I scrunch the sides to activate my natural wave pattern (which, lucky for lazy little me, is Marcel-wave-esque). If my roots start feeling oily before "wash day," I use hair powder. If you don't like how baby powder, corn starch, or some other powders turn dark hair ashy, you can buy expensive tinted hair powders from Bumble + Bumble. I use Lulu Organics's hair powder "for hair on days of unwash" http://luluorganicsnyc.com/hairpowder.html It has a great Art Nouveau image on the container, too. As binglish prof notes of corn starch, I find the powder helps reduce flaking of scalp and product buildup of certain kinds.