I'm not familiar with that specific product. I just use a regular conditioner as my leave-in. A few silicone-free options include Tresemme Naturals, ION Effective Care (if you have a Sally's nearby), Shea Mousture, or my personal favorite, Regis Olive Oil (I get it at the salon in WalMart). The L'Oreal EverSLEEK line is cone-free, but has a strong fragrance. Garnier Fructis does have one or two conditioners without silicones, but you have to check the labels. The other thing to keep in mind is that if there is a PPG or PEG before dimethicone, it's water soluble, so it's safe to use even with conditioner only cleansing. That should give you a few more possibilities.

3a/f/iii
Modified CG since 11/5/11
CLEANSE: CJ Daily Fix, DevaCare No-Poo, CHS Treatment Shampoo
RO: SS Caitlin's Conditioner, CJ Beauticurls Strengthening
LI: SS Repairing Protein Treatment, CHS Silk Leave-In
STYLE: Re:Coil, Curl Keeper, Deva Ultra Defining Gel, Curls Rock Amplifier,Sweet Curls Elixirs Okra Gel and Hard Hold Gel, SS Curl Enhancing Jelly and Firm Hold Gel