Ingredients beneficial for damaged or porous hair include coconut oil, hydrolysed protein, ceramides and panthenol. For curl boosting coconut oil, honey, magnesium sulphate all work, some people also from hydrolysed protein. Mag sulph (epsom salts) and protein can sometimes be drying tho.
For conditioning without excess weight consider going lower on the fatty alcohols, avoid butters but higher on the cationic surfactants. Since you live in a dry climate you may struggle to add water with humectants, you might be best concentrating on reducing porosity and patching surface damage.
Protect your hair from sunlight obsessively, lightened hair is at greater risk from UV damage. If you have not already, switch to a roots only colour application, if the lengths need 'refreshing' use a semi permanent not a demi or permanent or highlights - repeatedly dying the the same strands is particularly damaging.
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.