I do it after LI and KCCC but before gel (the gel holds the clumps in place after I create them). Or if I'm going super low-key I do it after LI and SM curl and style milk, with nothing after. I'd say do it before anything really sticky that would keep the hair from separating into the clumps that it wants to. Then I gel, scrunch, all that jazz.
2c/3a, fine, low porosity.
Low-poo: L'Oreal EverSleek
Co-wash: I've pretty much quit co-washing, my hair didn't like it
Rinse out: Aubrey GPB (for protein) or GVPCB (for moisture) - I don't PT/DT, these seem to be enough for my hair
Leave in: FOTE AVG with Tresemme Naturals on top and a TINY bit of SM Smoothie on the ends
Summer style (humid): LALSG
Winter style (dry): KCCC, then LALSG