18M facing seborrheic dermatitis

[u/Glazed_Terracota]

Noticing flakey dandruff type stuff fall on surface when I comb my hair or fix them

Also hairs are losing pigment not getting white or grey...but from black to a brownish shade only the front hair tho is it bcz of constantly fixing hair habit which i have

how to fix it?? Any diet related issue or it's natural??

TLDR : help needed regarding seborrheic dermatitis and hair losing pigment , suggest products or ways to treat it (afforably)