Madam C. J. Walker, was an American entrepreneur, philanthropist, and the first female self-made millionaire in America. She made her fortune by developing and marketing a line of beauty and hair products for black women under the company she founded, Madame C.J. Walker Manufacturing Company.

Madam C.J. Walker, born Sarah Breedlove, created specialized hair products for African-American hair and was one of the first American women to become a self-made millionaire.

http://www.biography.com/people/madam-cj-walker-9522174