I have oily skin and an oily scalp. For a while I thought I'd never be able to not wash near daily without my scalp getting disgusting. I found that I was able to slowly transition (it took me several years) to be able to cowash a couple times a week and low poo once a week or once every two weeks, without my scalp getting really gross. I do have to really scrub my scalp with the cowash, and it was slow and it wasn't fun. Going from low poo every other day to every three days for example gave me weeks of greasy hair before my scalp adjusted and I just had to trust that it would and stick with it. I do still have to clarify regularly because of buildup on my hair, but that seems to vary based on time of year, more clarifying in summer, less in winter (also more low poo in summer and less in winter).