Here is a chance to learn from my mistakes. It literally took me a couple of years to learn to take care of my greying hair. Maybe I missed all the advice because I've gone grey much earlier than my peers. It kind of sneaks up on you -- at first all you have to do is decide between dyeing or not. But when grey hair hits critical mass, you might start wondering why it's acting out and not responding to whatever worked before.
My high porosity hair was always very happy with a lot of proteins: protein-rich conditioners, beer rinses, yoghurt masks. With time it wanted less of those things, I thought it was because the porosity decreased as the damaged sections grew out. But as recently my favourite high-protein Kallos masque made my hair really unmanageable, I realised that it can't just be porosity. My hair never was and never will be low porosity even when super healthy, it has a lot of texture and curls.