I found my scalp got oilier before it got better, so if you haven't been doing it very long, that may be it. It balances out after a while when it realizes it doesn't need to produce so much oil to compensate anymore.

If you are co-washing, be sure you are thoroughly massaging and then rinsing completely. Apply more conditioner after if needed, of course.

It could be you are co-washing with something that was too heavy, as well.

I think I read you are using Deva stuff - I had no luck with Deva products. My hair didn't feel clean, and the products left me feeling "gunky".
2c/3a/3b, Fine/med, Dense, high porous, & normal elas.

Lo-poo - Renpure Keratin, SMR, Giovanni SaS
clarifying - mix Johnson's H2T with low poo
Co-wash - Suave Nats. clar. or coco.
RO - GVPCB, Ion Eff. Care, TN.
LI - SMR, Cure Care, or RO
Seal - MO or Jojoba
DT - + honey, ACV, & EVOO to SM masque & GVPCB
PT - Gelatin!, CNPF
Styling - FSG, AIF, BRHG, LALS/PS, GF curl spray gel, SM Souffle/Smoothie, LOOB
Oils - MO!, EVOO, jojoba, GSO, SM Elixer, EVCO, VO5 Hairdressing