Using a pre-poo, co-wash and RO works really well for my dry hair, its my guarantee of a good hair day. That said I have super thick very dense hair and it quite hard to weigh down.

Also my co-wash costs less then $4 for 1Litter, it does a really good job of cleaning my hair particularly given I use Coconut oil as my pree-poo, but doesn't do much in terms of adding moisture. I leave my RO in overnight and wash it out in the morning. Its time consuming but it take less time getting my hair to sit pretty in the morning, and its less damaging then using heat.
Modified CG since 8/12
Hair: BSL, Thick, Low Porosity, Dense, 3A
HG's: Moogoo, Ultraorganics Intense Camomile Conditioner and Clear Henna Hair Wax, Sukin Conditioners, CO, Spray Bottle, Henna
Low-Poo: Moogoo Shampoo
Co-Wash: Sukin Nourishing Conditioner
DT: CHHW, ICC, CO
LI: Sukin Moisture Restoring
Colour: Henna