Dimethicone is definitely not water soluble, and is one of the worst cones in terms of tendency to build up. If there is a PEG or PPG in front of it, then it's water soluble (like PEG-12 Dimethicone, for example, or PPG-18 Dimethicone). No PEG or PPG? You'll need at least a low poo to remove it. Cocamidopropyl Betaine removes any and all silicones, so your hair will be cone free after a wash with the Jessicurl.
CG since 11/2011
2c /3a F /Mii, low porosity

Fall Products /Routine:
Clarifying: Herbal Essences Tealightfully Clean
Low Poo: Renpure Luxurious Argan Oil
CO: Suave Naturals Tropical Coconut or Daily Clarifying, V05 Strawberry or Kiwi Lime
Tresemme Perfectly (un)Done, Cure Care, V05 Kiwi Lime Squeeze, V05 Strawberry, Renpure Brazilian Keratin (old formula),
PT: IAGirl's as needed