Like many of the above posts, I too have the problem of my underneath layers of hair being straightish (just a very slight wave.) It has improved slightly since I've gone CG, I don't know whether this is just a coincidence, but it is annoying all the same!
UK Curly
Curl type : Boticelli, 3a, loose curls
Porosity : High
Texture : Fine/medium (I think!)
Co-wash/rinse out/leave in : L'oreal Full Restore 5, GFR&S, Schwarzkopf Bio Pomegranite
Gels : Umberto Giannini Flirty Curls Scrunching Jelly
Finish product : Boots Naked Style Frizz Fighter Serum or a pea-sized blob of condish smoothed over canopy
CG since Feb 2011