Falling out?

Hello again and thanks for all your comments by the way!

I just have a question about my curls... obviously.

It's been about three months since my perm. Typically, how longuntil curls start to fall out? It seems to me that my curls are more of waves as the days pass. Maybe its the weather changing? Maybe my hair is getting used to certain products? Maybe my hair is just long/heavy and so naturally over time gravity is setting in...? Any other ideas?

As far as products go, i try to change it up regularly so my hair doesnt become used to one product. I actually have many that i use, as far as shampoo/conditioners go. Styling products, i use John Frieda Dream Curls. Sometimes a very little of Biolage Thermal Active Spray before i diffuse to hold curls... undecided if i like that or not. I actually just bought a few prodcuts from the line, Strictly Curls...the shampoo/conditioner and the Curl Booster.

WOW.. yeah i just posted waaay too much. Sorry for being overly descriptive. :-/