I can't stand the stuff. It was a fad product for me, one I just tried because a lot of people like it. I bought it pretty early in my curly journey. It does give me a nice curl but it feels nasty after a while. It's chock full of ingredients and I prefer products that only have a few and have more natural ingredients. I can't tell you why it makes you greasy because I think it's drying. I can't stand the glycerin, mag sulfate, polyquats... those are all potential problem ingredients and what gives me the "producty" feel.
fine, thin, normal/(low?) porosity. Mod-CG. Usually I can't co-wash more than 1x a week, & sometimes I have to use T-Gel in rotation due to scalp issues.

Co-wash: VO5 Volumizing
Poo: Giovanni 50:50
RO:TN, Nexxus Youth Renewal, Alba Coconut
PT: gelatin PT, ION EC
Stylers: Giovanni mousse, TIGI Curls Rock amplifier (a-cone), Curls Rock Strong Hold Mousse
Gels: SCC spray gel