How is your hair not damaged any more? Unless you cut all the flat ironed parts out it is, hair cannot be permanently repaired because it is dead. You say in the OP your hair is long and it's only been a year (~6 inches of healthy new growth).
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