I got tremendous growth doing the hardcore C&G challenge here on the boards. Its almost over for me....next week I will be out of braids.
My regimen was simple, maybe a bit modified:
First off, I didn't do boxbraids, only cornbraids with extensions. Did them myself. Unfortunately they only lasted about 2-3 weeks, before getting sooo loose they needed to be redone. NO problem for me, since it only took a few hours to slap some really nice cornrows in there....
I washed my braids 1x per week....every saturday (sometimes 2x per week, on Wednesday)
I never sponged my braids I always used diluted shampoo followed by diluted conditioner. I also always use a stocking cap over my head to keep the braids in place and definitely minimize the "frizzies".
I made sure I use the pads of my fingers to massage the scalp areas, where the braids were parted with the shampoo and the conditioner. I used ORS aloe rid clarifying shampoo all the time, since I was spraying heavily each and every nite.
I sprayed my braids nightly with DooGro LeaveIn Growth Lotion (protein) and then a round of BRX Braid spray(non-protein).
Covered the head with shower cap (a form of baggying...) and then put my silk scarf over it.
In the morning, after my workout & shower, the braids were still moist(never dripping wet...), and smelled great. They dried during the day.
Every 2-3 weeks when I took down braids I would simply pamper my head for the whole day before the braids went back in....this included a nice long DC w/heat, and air drying in six big fat braids. And I did this for seven months straight.....no breaks whatso ever!!!
Absolutely loved the results!!!
Hope this helps. I'm sure others will chime in with what worked for them.....