Flaxseed for omega-3, Hemp for balance. Flaxseed has the highest plant omega-3 (anti-inflammatory scalp); Hemp has perfect 3:6 omega balance + GLA. Flaxseed lighter; Hemp slightly richer.
Both are omega powerhouses. Flax is slightly richer and suits drier scalps; hemp is lighter and suits oily-scalp-dry-ends combinations. Store either cool and dark — their omega-3s degrade with heat and light.