I'm not a huge an of Deva styling products in general, but Ultra Defining Gel is an HG for me. I've used it alone over conditioner (I don't use the DevaCURL One C because it felt like it sat on tip of my hair and made my roots feel gunky. If I'm leaving my conditioner in my hair I either use the DevaCARE One C or I use Regis Olive Oil Conditioner). I've also used this over Re:Coil and Curl Keeper. My hair is thick/dense, but fine in texture. Make sure you use a good amount of gel (I use a ton of product, no matter what I use). If you check out the Curly Girl book, the instructional DVD is really useful an you would be amazed at the amount of gel they use.

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