EVOO and EVCO are the two heaviest oils, and are the two that penetrate the hair shaft. I love both, but use them as DT additives. Sealing would not be an option! My hair is fine and porous, and they would make it a huge mess!
Apricot and Grapeseed oil are both supposed to be very light. GSO is even available in fairly large bottles in the cooking section of many groceries, and is not very expensive! (it's on my list to try very soon!)
I often use SM Elixir as a sealer, but my total HG for sealing is mineral oil. As in straight plain baby oil. Sounds crazy, I know, but it's amazing!
With any oil, it's just a few drops put on very wet hair, focusing on the ends.
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