I've pretty much been CG my whole journey because my hair used to be chronically dry - mostly from using shampoo. In the last year or two I started using bar soaps/poos occasionally otherwise my scalp will get itchy especially in my crown area. My hair behaves more than I ever thought possible. I can slack on dc's, can use only oil (when straight) or mostly oil and a little conditioner (when curly with gel) and my hair maintains a good moisture level. Trust me - cg made my hair life so much simpler, I used to avoid dealing with my hair but not anymore.
When it come to pooing/cowashing, different silicones act different ways:
Silicone
Water soluble?
Recommended cleansing agents
Dimethicone
No
SLS, SLES, cocamidopropyl betaine, cocobetaine, ALS, or ALES
Dimethiconol
No
SLS, SLES, cocamidopropyl betaine, cocobetaine, ALS, or ALES
Phenyl Trimethicone
No
SLS, SLES, cocamidopropyl betaine, cocobetaine, ALS, or ALES
Amodimethicone
No
SLS, SLES, cocamidopropyl betaine, cocobetaine, ALS, or ALES
Cyclomethicone
No
cocamidopropyl betaine, cocobetaine, other mild surfactants, or conditioner washing
PEG-modified dimethicone
Yes
cocamidopropyl betaine, cocobetaine, other mild surfactants, or conditioner washing
Dimethicone copolyol
Yes
cocamidopropyl betaine, cocobetaine, other mild surfactants, or conditioner washing
Some other ingredients that might give build up problems without poo or sulfates:
Mineral oil/paraffinum liquidum
castor oil
waxes or impure oils
polyquat 7 & 10
Denat. alcohol
SD alcohol 40
Witch hazel
Isopropanol
ethanol
SD alcohol
Propanol
Propyl alcohol
Isopropyl alcohol
If anyone is interested in cg and has never cowashed or feel cowashing isn't for them, try to rinse your hair really well before applying the conditioner. If you use gel or other stylers rinse even more. If your worried about water swelling your hair you can still pre poo with an oil before cowashing without any problems.