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. Past bra strap length heading for waist.

CO-wash: Inecto coconut/ Elvive Volume Collagen
Treatments: Komaza Care Matani, coconut/ sweet almond/ fractionated coconut oils, Hairveda Sitrinillah
Leave in: Fructis Sleek & Shine (old), Gliss Ultimate Volume, various Elvive
Styler: Umberto Giannini jelly, Au Naturale styling gelee
Flour sack towel, pixie diffuse or air dry.
Experimenting with: benign neglect