Ok. Still may or may not be a product issue if you are not CG. If I use silicone conditioner I am all good but since I cowash often like every 3 or 4 days the second time I use silicones is when I have the buildup problems because Im putting silicones on top of silicones. It could be because you wait later to wash it isnt until then you see buildup. Just a theory. Im glad you found what works. But three months is a really long time not to wash part of your body. My cousin and a few other people I know do that and to be honest their hair has a sour smell. I have never told them though. a month I think can work for some people. If length is your goal You might try Teatree on your scalp because a clean scalp is important for growth.
Low porosity, high density, and fine
4a/3c, mod-CG, itchy prone scalp
Natural 4 Life