TBH the best thing you can do is stop straightening your hair, or start practising a heatless method. Research suggests coconut oil can be absorbed into the hair shaft and can help protect the hair from protein loss when washing, dying, UV light etc. My damaged hair absolutely loves it with sugar syrup (can use honey) which is a humectant so attracts water.

Both the Miss Jessie products you mention are loaded with silicones, these impart faux shine and slip and some are useful in heat protection products. However you are not actually improving the health of your hair longer term. Not even sure whether the silicones would block some of the protein from entering the hair since they are water soluble. There is little in the ingredients of either Miss Jessie product that impresses me, just looks like a standard commercial deep conditioners intended to give instant gratification.
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Komaza Care do some nice protein products, the Matani repair treatment is a leave in spray which also contains ceramides (lipids lost from the cuticle of chemically processed and damaged hair) and other beneficial ingredients.
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