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...
Winter Regimen
Pre-treatment: Hempseed oil
Cowash: various
Shampoo/Clarifier: Not now
PT:Not for a while...
DT:
various
Rinse: Living Proof Curl Detangling Rinse
LI/Detangler: CURLS Cashmere Curls leave-in
Moisturizer: Miss Jessie's Baby Buttermilk
Stylers: various
Sealers: Tamanu oil, OH BSP

*experimenting and loving it!