I assume that you were at least still rinsing water through your hair, in that time? Did you try using anything else on it or just water?

Back in my 20s, I used nothing but water on my hair for a few years. All the hair oils in it made may hair dark and heavy to the point where it would hardly move in the wind or gravity.

These days, I just use water with a bit of coconut oil, every other day, and it seems to be doing well.

I always assumed I would eventually dye my hair once it became too grey but I am not sure I will ever bother. Really, as long as I still have it, that is probably good enough.