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.
CO-wash: Inecto coconut
Treatments: Komaza Matani, coconut oil, Hairveda Sitrinillah
Leave in: Fructis Sleek & Shine (old), Gliss ultimate volume, Inecto argan
Styler: Umberto Giannini jelly, Boots Essentials gel
Experimenting with: going back to basics