To healthy edges I think you need to not wear your hair tight. I used wear like 3 pony holders to wear my hair !!! Now im like owwww how in the hell did i do that, at the end of the day i would be yankin my pony tail out to get some brain relief!! I use one pony holder and i wrap it 2 or 3 times. I also use castor oil on my edges and that has really helped my edges fill in. I also do daily scalp massages with my co washes. I think its more of the technique ie loose ponys and scalp massages HTH