If I massage my hair too hard when I'm co-washing, it makes my head itch, but my head always itches the worst around this time of year. Going CG (modified) has made my head less itchy, except when I tried to use garnier as my co-wash, it irritates my scalp, but is fine as a rinse out. I have a few flakes, but it's WAY better. I worry about using strong oils on my hair due to its low porosity, but I have heard coconut oil is pretty light. I may try it. I am tempted to try olive oil, but I think I'd have to use a strong shampoo to get it out, and since I am trying to just co-wash, it might build up too much. Trial and error, I keep saying that over and over to myself. My curls look better, so I'm not giving up!