I'm roughly 15 months into no'poo here. I've always used BS and ACV, gradually reducing concentration and frequency over time. Around the 9 month and 12 month mark I used boxed dye on my hair and used the included conditioner (with nothing else) for my wash the night of the dying and 1 week later, then went back to my usual weekly ACV rinse with BS scrubs as needed (usually every 2-3 weeks). Other than that, no other product use. My routine has been fairly consistent for the last 6-7 months.
About a month ago my hair seemed to be a bit waxier and heavier around the crown than usual. Not visibly noticeable, but I could feel it when I ran my fingers through my hair close to the scalp, and they would more or less get stuck. I tried doing a BS wash even though I had done one only about a week ago, but it didn't help as much as I'd hoped. I started doing more water-only massages which kept the waxiness from getting out of control, but I couldn't seem to completely get rid of the waxiness. I'm still not sure what caused the waxiness, as I didn't change anything about my routine when the problem developed.
Last week I decided to try doing a green tea rinse instead of an ACV rinse since some people have reported "greasiness"-esque issues with ACV. Sure enough, my hair dried wonderful! The waxiness at the crown went away, and I could run my fingers through my hair again and they could slip through easily. I was hesitant to report success here until I used it again, in case I had merely washed away one product's buildup only to start forming a new sort of buildup.
I did another tea rinse two nights ago, this time I used both a green tea bag and a herbal tea mix bag (the herbal more for the scent). My hair was still lovely and soft and light. My hair is doing wonderfully again and I'm pretty sold on using tea rinses instead of ACV from now on. I also have slightly wavy hair and tea seems to weigh the waves down ever so slightly less. I didn't gain any curls, but brushing my hair several times in one day no longer seems to brush the waves out.
Though I'm not sure why ACV stopped working for me, I'd recommend tea rinses to other ACV users in a similar position...if a problem develops with waxiness out of nowhere, try substituting tea for ACV and see if that solves things! Plus, maybe now I'll stop getting the, "But doesn't your hair stink of vinegar??" question when I tell people about my routine.
- ACV vs tea rinses