I have never tried the Deva line. But if you are looking for a conditioner wash I highly suggest SheaMoisture C&H co-wash. It cleanses without stripping the hair.
I also use the KCKT. The best substitute is the Giovanni Direct Leave-In. It does have protein.
I also use the Kinky Curling Custard. You are right, OP. For me it either makes my hair hard or sticky but I found out its not the product, just user error. So I just had to practice more with it cause a little goes a long way. A good substitute that I use is homemade golden flaxseed gel. I use heyfranhey YT tutorial. Comes out perfect every time :-)
Sent from my N861 using CurlTalk App
Wash: Liquid African Black Soap, BS/ACV
Conditioner: SM SB, YTCarrots, Organix Coconut Milk
Pre-Poo: Honey & EVOO
PT: Super Mayo Deep Conditioning Treatment
Moisturizer: CURLS Souffle
Gel: KCCC, Eco Custard
Oil/Sealant: SB, EVCO, EVOO