I was wondering what would happen if I left the treatment in but didn't apply heat? Would it be effective as a protein treatment?

I don't want to lose any of my curl, just wanted a strong protein treatment and reduction of frizz.
3a/3b/3c, thin/fine, low porosity

Shampoos: Oyin Honey Wash, Bobeam Rootz Shampoo Bar
Conditioner: SheaMoisture Restorative Conditioner
Deep Treatment: SheaMoisture Deep Treatment Masque
Leave-In: Kinky-Curly Knot Today
Styler: Kinky-Curly Curling Custard
Refresher: Kinky-Curly Spiral Spritz