Frizz when soaking wet? Could be protein overload, more conditioning or oiling may help but you sometimes need to wait for the excess protein to 'wear off' too. You won't necessarily get the excess off in one low-poo, some proteins can be highly substantive (sticks well to hair).
What are all your products?
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