A-to-Z List Essential Oils for Dandruff:

Bay

(Pimenta racemosa subsp. racemosa)

Aroma Description: Bay Essential Oil smells medicinal, fruity, spicy and herbaceous.
Cade (Rectified)

(Juniperus oxycedrus)

Aroma Description: Cade Essential Oil smells smoky. It is similar to the aroma of burning wood or tar.
Cedarwood, Atlas

(Cedrus atlantica)

Aroma Description: Woody and sweet. Atlas Cedar Oil is a bit sharper than Virginian Cedarwood Oil. The aroma is reminiscent of artificial mothballs.
Cedarwood, Virginian

(Juniperus virginiana)

Aroma Description: Astringent, Balsamic, Slightly sweet, woody. It strongly resembles the aroma of cedar chests and closets.
Evening Primrose

(Oenothera biennis)

Aroma Description: Has very faint or no aroma.
Spikenard

(Nardostachys jatamansi)

Aroma Description: Spikenard Essential Oil smells deep earthy, woody and musky.