I usually wash my hair twice a week but around touch up time, I do conditioner only washes and where my hair airdried in a bun or braid outs since, like Tracy, my hair looks better that way because of the re-growth.
I'm due for a t/u next week and am doing just that, conditioner washes approx every other day or even every day (due to exercising). I'll prolly do my last wash the day before my t/u and I step up using Aubrey GPB (moisturizing protein conditioner).