This doesn't make your hair grow, but helps with preventing "breakage" which leads to growth.
My favorite hair style which through the almost 3 years I've been natural discovered it actually a protective hair style is wearing my hair in a "bun".
Welp! its a bittersweet situation with hair style, because it can cause breakage around the perimeter if you place your hair in a "bun" too type.
If your like me and have thinner/finer hair around the perimeter of your head you should leave out the sides and create a side bang with one side and take out the other side before bunning and just pin it in to the bun (no stress what so ever).
ps. I also do this alot (leave bangs out and place everything also under a beanie... remember this wacky post?lol domo!!