It depends what result you’re looking for, and that is indeed a toughie, but I would probably recommend the following regime:
H’suan Wen Hua - Hair pre-treatment. Will help with the dryness and is full of nutrients to help hair strength and condition. As a pre treatment it won’t leave the hair as flat after washing.
Cynthia Silvia Stout Shampoo - The salt and lemon will help with shine and volume and the Stout will make sure it doesn’t end up too dry, while giving great body.
American Cream or Retread conditioners - Both strong, Retread slightly stronger, so you may find it’s too heavy for your hair if it’s flat, but both would help with the dryness.
R’n’B Hair Moisturiser - If you find your ends are splitting due to dryness a tiny bit of this leave in moitsuriser applied to the ends or pulled through the hair before drying will help protect the hair and keep it moisturised.
Hope that helps!