I voted 6 months, which is about how long it took to find what works for me in most weather conditions. I only try new things for fun.

Suave/VO5 conditioners for washing and conditioning (2 or 3 times a week).
LA Looks sport Gel (every day)
Jessicurl Confident Coils (mainly because I like the smell. I don't use it every day)

I never get 2nd day hair and wet my hair every day (unless I'm not going anywhere, then I just put it in a pony or headband).
--I'm located in Western PA.
--I found NC in late 2004, CG since 2-2005, started going grey in late 2005.
--My hair is 3B with some 3A, texture-medium/fine, porosity-normal except for the ends which are porous, elasticity-normal.
--My long time favorite products are Suave & VO5 conditioners, LA Looks Sport Gel, oils, honey, vinegar.
--My CG and grey hair progress -- http://www.naturallycurly.com/curlta...-progress.html