Beneatha's Hair – When the play begins, Beneatha has straightened hair. Midway through the play, after Asagai visits her and questions her hairstyle, she cuts her Caucasian-seeming hair. Her new, radical afro represents her embracing of her heritage. Beneatha's cutting of her hair is a very powerful social statement, as she symbolically declares that natural is beautiful, prefiguring the 1960s cultural credo that black is beautiful. Rather than force her hair to conform to the style society dictates, Beneatha opts for a style that enables her to more easily reconcile her identity and her culture. Beneatha's new hair is a symbol of her anti-assimilationist beliefs as well as her desire to shape her identity by looking back to her roots in Africa.
If I remember correctly, she wanted to get back to her natural roots.