I thought all you had to do was shampoo, condition (ACV rinse in my case) and voilà!
I have only used wet and wavy hair for braids and the ends that didn't contain my hair went wavy w/o any product--you can see a bit of the wavy part in the first pic (Beverly Johnson wet and wavy):
The hair in the braids below is actually hisandher.com water wave WEAVE hair whose tracks I cut off. It too would just go wavy when I wash. This was immediately after a wash:
And even though the hisandher.com hair is over a year old, it still gets wavy at the ends that don't contain my hair when I wash. You can see the waves stick out of the Curlformers here:
I do not use any products AT ALL during the life of the hair on my head, so maybe that makes a difference. Even when I do a braidout, which gives waves throughout the length of my braids (including the part containing my hair) I simply cornrow it damp and then when dry, I undo. Not having any products keeps the shine of the hair as good as new and It doesn't get frizzy (Beverly Johnson wet and wavy):
And if the hair can look so fresh and shiny (not frizzy) with my hair which has no shine in the mix, I imagine a weave would look even better.
I remember when I used to use synthetic hair, the less crap I put on it, the longer the hair looked fresh. I think in the name of trying to accomplish a style, we sometimes do way too much.
ETA: Even though I don't use products for the braid-outs, they last for a few days. I wore a braid-out on Friday, and for the last two days, I've been feeling so exhausted that I've just been falling asleep fully clothed on the couch before later dragging myself to bed. The means, I have gone to bed without baggying my head or wearing anything over it, coz in that zombie mode of walking to bed, hair was the last thing on my mind. Still, my 3-day old braid-out can probably make it out to the store w/o anyone calling the guys in white coats to take me away. And BTW, if it looks uneven, it's because my HIH disease causes me to redo some braids whenever my hands are idle, so by day 3 not all are uniformly wavy. But if I hadn't messed with them, they'd be. The 3-day old braid-out this morning after a second night of fighting w/ my pillow: