Ericachristina, I am not sure about Dubai conditions in general but if the water is really hard it might be worth taking a cleanser with some chelating powers - CJ daily fix or any shampoo with any of the ingredients

Disodium EDTA
Tetrasodium EDTA
Sodium Citrate AKA Trisodium Citrate

This link gives some ideas (not sure if they are CG though) -

TKC: Chelating v. Clarifying Shampoos | Nadia's Notes
UK based wavy

Mostly waves, but curls and straight bits too!
Fine to medium, high porosity, medium density, very low elasticity
Highlights damage (growing it out), seems to like protein and need lots of moisture.

Cleanse - CJDF, trying out low poos ; Co wash- Uk chemist brands, Urtekram Rose or Aloe, Hairveda Amala Cream Rinse; RO - varies, Tigi Moisture Maniac, Desert Essence Coconut ; Leave in - Keracare natural textures; Sealant - argan oil
Trying out new things, still looking.