When I stretched for 33 weeks, my leave-in was great for keeping my NG slicked down for buns and ponytails, Paul Mitchell "The Conditioner"....I applied it through out my hair then applied more to the edges, top, nape, then sealed. I put on my scarf, and airdried, my edges laid down smoothly all day long....
ETA: I'm a 4b/c while my hair laid down smoothly and shined, it was wavy, I actually loved that look.
This go round I'm going to try Whipped Jelly by HairVeda, I still have a bottle of PM The Conditioner just in case the Whipped Jelly doesn't work out....HTH