When I wear twistouts they last me 5-7days. I'll wear twist for a little over a few. Then untwist and fluff w/my hair. At night, I place twistout hair into chunky twist and moisturize w/ my shealoe concoction and loosely cover w/a scarf. In the morning, I undo my chunky twist, refluff w/some moisturizer on my hair and go.
The key for making my twistouts last is placing them in chunky twist at night and keeping my hair moisturized. Especially my ends.