What is a protective style?

A hair style that requires low manipulation, protects the ends of the hair strand to prevent breakage and can promote growth. 

There are many protective style options such as; two strand twists, coils, braids, bantu knots, buns, straw sets, roller sets, micro braids, kinky twists, cornrows, sew ins, weaves, wigs, phony ponies, head wraps and I’m quite sure there are more.

Have you tried any protective styles? What styles have you tried?