Have you tried the Giovanni Leave-In? It's super light and makes detangling a breeze. You could use it as a rinse-out to make it even lighter! Also, if your hair likes protein, the Aubrey GPB condish is pretty lightweight as a rinse-out (I wouldn't leave it in). Finally, a lot of folks love KCKT, although it doesn't work for me personally.
Medium/coarse, low porosity, dense, mix of 3s
CG (again) since Nov. 2012

Cleanse: SM Moisture Retention, Elucence MBC, KC Come Clean
Condish: Giovanni DL, Cure Care, Ion Treatment, GVP Balm, AOHR
Stylers: KCCC, SM Souffle, AOMM, SS CEJ, JCRR, JCCC

Trying out steaming!