Have you tried pre-treatment with a DC? Sometimes when my hair wants to "frizz out", I'll do a pre-treatment first. Then that's followed by a DC or PT, depending how the hair feels after the low-poo or shampoo. Before the styling product is put on, I'll use a leave-in.

Also, after the shampoo or when you rinse out the DC/PT, try using a ACV rinse to close the cuticles.

You could also try the Rum and Egg Treatment.

HTH
Mod CG-Naturally Highly Porous and Dry
This list is not exhaustive...
Pre-treatment: Creamed Coconut
DT: BEDHEAD Self-Absorbed; Fekkai Reparatives
Leave-in:Crece Pelo,Honey Baby Detangler
Stylers:Ouidad Curl Immersion Hi-Defining Custard
Refresher: CURLS Lavish Moisturizer
*experimenting and loving it!