What about a hit of protein? I know everyone says to slow down with protein treatments in the winter time, but it might perk your curls back up. Have you been doing deep treatments religiously? Those definitely help with frizz. I'm a fine, wavy too A lot of people are sealing with oil on top of their leave-in and under their gels to seal in the moisture that the low dews steal from us in the winter time. hth
Upper Michigan Dews
3a ~ Fine ~ High Porosity ~ Normal Density

NoPoo: JC Cleansing Cream
Rinse Outs: SS:PRT, CJ Repair Me, CJ Argan
Detangler: KCKT
Leave-in: CJ Repair me
Stylers: UFDCM, BRHG
Refreshers: Batiste (dry shampoo) on the roots & UFDCM everywhere else

iHerb Discount Code: SAF007