I didn't suggest you cannot use oils, simply that they do not add moisture. Ingredients that may help your hair feel in better condition (assume this is what you mean by feeling moisturised?) include panthenol, ceramides, cationic surfactants and fatty alcohols, anything at pH 4.5 to 5.5.
Many curlies have problems with glycerin in high dew points so might be worth experimenting with a glycerin free routine; shea butter does not penetrate and can build up so you might clarify (or chelate if you have hard water/ go swimming).
2a-2c, medium texture, porous/ colour treated. Three years CG, growing out mechanical and chemical damage = breakage and very high porosity. Past armpit length heading for waist.
Treatments: Komaza protein, Komaza Matani, coconut oil with sugar syrup. Hairveda Sitrinillah
Leave in: Fructis Sleek & Shine (old), Gliss ultimate volume
Styler: Umberto Giannini jelly, Boots curl creme, Rockin RInglets
Experimenting with: Mega-Tek, Curl Harmony reviver, Elvive Full Restore 5.