Mineral oil is incapable of penetrating and may build up if you don't shampoo. It's a cheap ingredient. Why don't you make your own deep conditioner with a basic conditioner plus coconut, olive or avocado or argan oil? You can add honey or sugar syrup as a humectant if it suits your climate.
The actives in the Curly Kinks renew are likely the panthenol and the glycerin, maybe some of the slippy film formers much like in Kinky Curly Knot Today. Only the panthenol will penetrate, given that I wonder how that would work as a leave in or with a much thinner layer used as a deep conditioner? Agree with KathyMack, that is a whole lot of conditioner per use.
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