I don't like HETT, either! It didn't have enough hold besides being drying.

CO-washing more does not mean more product buildup. CO-washing more actually means cleansing your hair more, but adding more moisture at the same time! As long as you scrub your scalp well (since the thing you're cleaning your head with is the friction from your fingers) and really rinse everything out, you shouldn't have a problem with product buildup, unless you go way overboard on gels and stylers and leave too much conditioner in your hair.

HTH!
Type 2c/3a with lots of hair and a super sensitive scalp! Med/slightly coarse texture, low porosity and elasticity.

Favorite...
Low poo: Organix TTM, Essential Wholesale Free & Clean
RO/LI: TN, GFTN, YTC
Stylers: EcoStylers, GF Curl Shaping Gel, Aussie Aussome Volume Mousse & Instant Freeze Gel, GFPC, LALNC, La Bella Lots of Curls, Apricot Oil, KMFUM, AO B5DG
Extras: sugar scrubs, AVG washes, pre-poos with EVCO, oiling scalp before washes, plopping, gelatin PT.
Mod-CG since 12/1/10!