What do you mean by moisturised? If you mean shine then that is nothing to do with moisture (= water) in the cortex, that is either to do with a healthy cuticle laying flat or a layer of plastics of other ingredients coating your hair - faux shine and slip is exactly what silicones are designed to do. Actually hair that contains too much moisture will swell and frizz, it won't shine.
What are you using at present? Did you try hydrolysed protein or magnesium sulphate for curl boost? Protein can also help the cuticle lay flat and give shine. That Gliss Kur is all over Europe not UK only or I wouldn't have mentioned it.
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.