For me, yes, coca betaine is enough. I've used sulfate-free low-poos, like Renpure, that have coca betaine and they remove my heavy-duty layers of silicone with no build-up at all!
whurly girly (2C/3A).
thick; medium/coarse; low porosity.
hair that is drier than the sahara desert.

LOW-POO: Renpure Organics
CO: L'Oreal EverCreme Cleansing Conditioner
RO: Renpure Keratin Conditioner. New HG!
LI: L'Oreal EverSleek Humidity-Defying LI Creme
Styling: SM Curl Milk, Argan Oil for sealing, sometimes GFPC Gel, some honey for hold, TIGI Control Freak Serum!!