Is your signature up to date? Looks like you have some cones in there, even if they don't build up they can block out anything from penetrating. Why did you protein two days straight? Could be the combination of protein, heavy conditioners and cones are building up on your hair - AFAIK
what people refer to as overconditioning is not the same as simply needing to clarify. Or could be because you didn't deep condition after the protein treatments.
2a-2c, medium texture, porous/ colour treated. Three years CG, growing out mechanical and chemical damage = breakage and very high porosity. Past armpit length heading for waist.
CO-wash: Inecto coconut
Treatments: Komaza Matani, coconut oil, Hairveda Sitrinillah
Leave in: Fructis Sleek & Shine (old), Gliss ultimate volume, Inecto argan
Styler: Umberto Giannini jelly, Boots Essentials gel
Experimenting with: going back to basics